7 research outputs found
Alleviation of cold damage to photosystem II and metabolisms by melatonin in Bermudagrass
No full textAs a typical warm-season grass, Bermudagrass [Cynodon dactylon (L).Pers.] is widely applied in turf systems and animal husbandry. However, cold temperature is a key factor limiting resource utilization for Bermudagrass. Therefore, it is relevant to study the mechanisms by which Burmudagrass responds to cold. Melatonin is a crucial animal and plant hormone that is responsible for plant abiotic stress responses. The objective of this study was to investigate the role of melatonin in cold stress response of Bermudagrass. Wild Bermudagrass pre-treated with 100 μM melatonin was subjected to different cold stress treatments (-5 °C for 8 h with or without cold acclimation). The results showed lower malondialdehyde (MDA) and electrolyte leakage (EL) values, higher levels of chlorophyll, and greater superoxide dismutase and peroxidase activities after melatonin treatment than those in non-melatonin treatment under cold stress. Analysis of chlorophyll a revealed that the chlorophyll fluorescence transient (OJIP) curves were higher after treatment with melatonin than that of non-melatonin treated plants under cold stress. The values of photosynthetic fluorescence parameters increased after treatment with melatonin under cold stress. The analysis of metabolism showed alterations in 46 metabolites in cold-stressed plants after melatonin treatment. Among the measured metabolites, five sugars (arabinose, mannose, glucopyranose, maltose, turanose) and one organic acid (propanoic acid) were significantly increased. However, valine and threonic acid contents were reduced in melatonin-treated plants. In summary, melatonin maintained cell membrane stability, increased antioxidant enzymes activities, improved the process of photosystem II, and induced alterations in Bermudagrass metabolism under cold stress
Interplay between Microorganisms and Geochemistry in Geological Carbon Storage
No full textCitation: Kirk, MF, Altman, SJ, Santillan, EFU, Bennett, PC (2016) Interplay between microorganisms and geochemistry in geological carbon storage. International Journal of Greenhouse Gas Control 47, 386-395.Researchers at the Center for Frontiers of Subsurface Energy Security (CFSES) have conducted laboratory and modeling studies to better understand the interplay between microorganisms and geochemistry for geological carbon storage (GCS). We provide evidence of microorganisms adapting to high pressure CO2 conditions and identify factors that may influence survival of cells to CO2 stress. Factors that influenced the ability of cells to survive exposure to high-pressure CO2 in our experiments include mineralogy, the permeability of cell walls and/or membranes, intracellular buffering capacity, and whether cells live planktonically or within biofilm. Column experiments show that, following exposure to acidic water, biomass can remain intact in porous media and continue to alter hydraulic conductivity. Our research also shows that geochemical changes triggered by CO2 injection can alter energy available to populations of subsurface anaerobes and that microbial feedbacks on this effect can influence carbon storage. Our research documents the impact of CO2 on microorganisms and in turn, how subsurface microorganisms can influence GCS. We conclude that microbial presence and activities can have important implications for carbon storage and that microorganisms should not be overlooked in further GCS research
Differential acclimation of enzymatic antioxidant metabolism and photosystem II photochemistry in tall fescue under drought and heat and the combined stresses
No full textQuality inferiority in cool-season turfgrass due to drought, heat and a combination of both stresses is predicted to be more prevalent in the future. Understanding the various response to heat and drought stress will assist in the selection and breeding of tolerant grass varieties. The objective of this study was to investigate the behavior of antioxidant metabolism and photosystem II (PSII) photochemistry in two tall fescue genotypes (PI 234881 and PI 578718) with various thermotolerance capacities. Wide variations were found between heat-tolerant PI 578718 and heat-sensitive PI 234881 for leaf relative water content, malondialdehyde and electrolyte leakage under drought, high-temperature or a combination of both stresses. The sensitivity of PI 234881 exposed to combined stresses was associated with lower superoxide dismutase activity and higher H2O2 accumulation than that in PI 578718. Various antioxidant enzymes displayed positive correlation with chlorophyll content, but negative with membrane injury index at most of the stages in both tall fescue genotypes. The JIP-test analysis in PI 578718 indicated a significant improvement in ABS/RC, TR0/RC, RE0/RC, RE0/ABS values as compared to the control regime, which indicated that PI 578718 had a high potential to protect the PSII system under drought and high temperature stress. And the PS II photochemistry in PI 234881 was damaged significantly compared with PI578718. Moreover, quantitative RT-PCR revealed that heat and drought stresses deduced the gene expression of psbB and psbC, but induced the expression of psbA. These findings to some extent confirmed that the various adaptations of physiological traits may contribute to breeding in cold-season turfgrass in response to drought, high-temperature and a combination of both stresses
Effect of heavy metals pollution on soil microbial diversity and bermudagrass genetic variation
No full textHeavy metal pollution is a serious global environmental problem as it adversely affects plant growth and genetic variation. It also alters the composition and activity of soil microbial communities. The objectives of this study were to determine the soil microbial diversity, bermudagrass genetic variation in Cd contaminated or uncontaminated soils from Hunan province of China, and to evaluate Cd tolerance of bermudagrass at different soils. The Biolog method, hydroponic experiments and simple sequence repeat markers were used to assess the functional diversity of microorganisms, Cd tolerance and the genetic diversity of bermudagrass, respectively. Four of the sampling sites were heavily contaminated with heavy metal. The total bioactivity, richness, and microbial diversity decreased with increasing concentration of heavy metal. The hydroponic experiment revealed that bermudagrass populations collected from polluted sites have evolved, encompassing the feature of a higher resistance to Cd toxicity. Higher genetic diversity was observed to be more in contaminated populations than in uncontaminated populations. Heavy metal pollution can result in adverse effects on plant growth, soil microbial diversity and activity, and apparently has a stronger impact on the genetic structure. The results of this study provide new insights and a background to produce a genetic description of populations in a species that is suitable for use in phytoremediation practices
Sink property of metallic glass free surfaces
No full textWhen heated to a temperature close to glass transition temperature, metallic glasses (MGs) begin to crystallize. Under deformation or particle irradiation, crystallization occurs at even lower temperatures. Hence, phase instability represents an application limit for MGs. Here, we report that MG membranes of a few nanometers thickness exhibit properties different from their bulk MG counterparts. The study uses in situ transmission electron microscopy with concurrent heavy ion irradiation and annealing to observe crystallization behaviors of MGs. For relatively thick membranes, ion irradiations introduce excessive free volumes and thus induce nanocrystal formation at a temperature linearly decreasing with increasing ion fluences. For ultra-thin membranes, however, the critical temperature to initiate crystallization is about 100 K higher than the bulk glass transition temperature. Molecular dynamics simulations indicate that this effect is due to the sink property of the surfaces which can effectively remove excessive free volumes. These findings suggest that nanostructured MGs having a higher surface to volume ratio are expected to have higher crystallization resistance, which could pave new paths for materials applications in harsh environments requiring higher stabilities.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000351178500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Multidisciplinary SciencesSCI(E)[email protected]; [email protected]
0004
No full textL'AILY PALO AI.TO TIMES. WEDNESDAY, JAN. 3. 1917.
PACK FIVE
VARSITY THEATRE
Paramount Program
TONIGHT
tt
fhe Victoria Cross"
A remark.Me characterisation ol the rlasalr and featurlBg MH"
TKI____t„V. tha noted Mar.
•THE UPPER NILE"
i'tiraiuoun.-BurtoQ HolmM Tra. el Picture.
l',--!l»!i>\ is CENTS,
MA TINKK S:tt> -a* 4 p. ta
l-llll.l.ltUN a CENTS.
KVKMNO 7:1H Ud K:-.V
C-OMINO THriUil.AY—Ito BM .... l.-k. M 11:11: IM-I'.i. 11, "Oil.
VKR TWIST," Dickens' lamoas -tan-
NEW TELESCOPE IS
LARGEST IN WORLD
IkMM ii Canadian Gown-
not Obsanratory.
EXPECT NEW DISCOVERIES
Tbe Coterl* Clnb will meet January 4 at 8 p. m. at the I'nltarian
Church halt.
• * .
Th* I-o. Angcte. Herald says that
David A. Curry, th* picturesque Callfornlan. of Palo Alto Is drawing good
crowd* to bts lectures and picture*
on Yo**mlt* valley and th* hlgb
Sierras. I
. ••••
One or the most difficult tasks
ever undertaken by the Lasky Com-,
p.jir. was the securing of types for]
Its adaptation of "Oliver Twist,"!
wblh will be the Paramount picture
at the Varsity Tb*at*r tomorrow]
and Friday, with th* charming Ma- J
tie Doro as Oliver, supported by an
t. i-llent caat.
t • •
Th* seat sal* tor "Tbe Cay Gam**"
a high school Thespian Club production, will be thrown open Friday,
January ■"». at Weingartner'. drag
store. Ticket, to thc comedy will
•ell at 50 cent* apiece. In anticipation of a large crowd Business Manas-.-. K. Iiraunschwalgcr bas secured
the Armory for the evening of the
production Friday, Jsnusry 12. Admittance cards win also be sold by'
high srhool students.
• • •
With thc reopening of school §•▼«]
-oral new pupils have registered at]
the Palo Alio t'nlon High School.
Among the new students are Ethel
ami N'eal Templln. wbo bare entered
the freshman-A clas* They ball
from Rupert High School. Idaho.
Aldine Wellut.n ha> re-ruined the
Junior-it clsss. after an absence of
one semester during which time she
attended a prlrate .cbool tn Piedmont.
Hiff* Mirror Will Assist In Ftp-eating
Secrets of Ski..—OriBin of T.lsscop*
Wiled In Myst.r,—Polish Scientist
First to M.nt.on Petalblllty of M*flai-
f/lng Objects.
A taleacop* w*lghlng fl-ty-five tons
and having an observation tab* thlrty-
ooe feat loug recently has been Install-
ed at the gorernment astronomical ob*
aerratorr, Victoria, Canada. It la tb*
greatest Instrument uf lu kind tn tb*
world, and astronomer* expect to make
Important new Ji*merit-, by its aid.
Tb* giant tele-sco-** Is of tb* refi«ct-
log type and ba. a minor ln plac* of
a lens for contracting light raya at d
r»V*allng distant planets. This mirror
measures aeveoty-tbre* lncbe* and Is
twelr* lncbe* thick at tbe edg**.
neighing two and m quart** tous.
All of tb* p*n« of tb* tele-scope ara
Pn>r«cjor C D. Mart o: Palo Allo
left thl. morning ror N'ew York,
whir* he will attend a meeting ol «J«tricaUj operated, and tbe installa-
englneering *xp*rt.. U°tn °f **• JS™** l™™** " **""
, m # c*t* engineering problem.
__,_,,. | A Lost Ch.pt.r In History.
Mr*. J. D. Follm*r of Pair. Alto, ■„,* Utert iChl(.Tem<.Bt ,n J, ,d.
mother of R. W. Foltm«r i* In Grand Tanc*m*nt of astronomy calla to mind
Rapid.. Mich., taking trertment at that tb* origin of tb* t*l**cope Is a
th* Rurlraon Sanltarlnm. lost chapter ta history.
• • • Vltello, a Polish scientist wbo flour-
Mr. and Mrs. W. c. Werry re- »** ^JS? '?"**_* 'J* !!__!______
' ..... lying of object* when Mew*.] through
turned l«st *«nlng from Grass \*\* „ wtgaml , , „lhw of |I|H> wblle
l*y, where they attended tb* funeral u0fffr »_■_•->-, |„ -■*■-, „r tiig wortu tells
or a favorite uncle, a brtther of uf experiment, mndo wllb l.:,-.- in
Richard Werry ot Uttl city. mieb a way ibat onjr-ts men through
tbem would seem to !•*• magnified,
wblcb leave, little doubt tbat spectacles were actually In us* tu those
day*. .
Still otber author! tlce, notably IVter
Borrlllea In bis work "I* Vcr* T.-I
Dr. David Starr Jordan, chancellor
emerllu. of Stanford CniTer.lt>. U
the author of the leading ankle in
the December Snnaot, entitled "Wbat
of tb* Nation?" Tbe -.ob.lt I*.— eecopil invent.-ri' award eredll
"The Charge Against Democracy." Zacharlafa Jan. or Jansen and Hans
'Victory and Defeat." "The Soullns. I-apprry. twlti of whom In WOO were
War"- Indicate the high points oPWtlclane kuTI spectacle makers living
at Ulddleburg. Holland. It Is further
told buw about the year lfilO these two
entcri>ri.tng scientist., having Invented ttie ii-l.«. "in*, preeented one to
■ertalned th* Rank of Palo Alio *m- ^nre Maurtr* or Naaaan
ploye. at dinner New Year . day. aa Ualllei. who by reesou of lit* even
usual Th* wive* wet* also pii-*«nt. then worldwide eminent** was always
making the total nu miter at table the first to receive Inrnrmatlon of any
fourteen. Mr. Parkinson's first New development lu aclrntlflc research, no
sooner beard from a Oermsn savant
nf the new magnifying Instrument'
Doctor Jordan'a Brittle.
Mr and Mr.. G. R. Parkinson en-
OUR
Annual Clearance
SALE
Starts Wednesday December 27th
SPECIAL SALE PRICES ON ALL
Men's Suits. Overcoats, Hats, Caps
and Furnishings
Men's Suits From .... 11.95 up
Boys'Short Pant Suits - -' -. 3.50 Hats cut to - ' - v - 2.50 Hats cut to - - - - 1.15
Children's Hats Half Price
Christy, Rhodes & Co.
PHONE 200
Year's dinner to ihn employ it of the
bank required only one extra piste.
as he managed the batik at first with
onlv one assistant.
than he wt lo work lo Improve upon II
An Early 7-.... ,..,_..
The teles-col*** constructed by (inHid ;
ron.lsted of one entires object glass j
Mnniaulla Hall will ,..,-,,; lis tmI 0D# ,-oneav* eyeglass, which were
second semester January _*|h. Tu*.- placed at tbe extremities of a metal
daj Is scheduled for registration day lutte, the first »f these magnifying tbe '
and assignment of lessons, regular belght and Itreadttt of ol*Je*ii three
work beginning Wednesday January ,lm**- l**n °° h* ProdlK'*'1 * »*•*- -
i-'th Roys are received both as ___^_t^__\7^___t__!_l!!lS_
- tb
- tb
Ww:
V cfc
lo
ot
Writing Made E.iy.
Steadily tbe roads that lead to suc-
«_**. In literature ar* being made easier A good many people wbo would
Uke to write Action, but bare shrunk
frotn tbe labor of finding equivalent,
for "sal-l." will welcome a list of sub-
atttute. ror the necessary little word
published tn the Rmtou -Vrttur. There
are no less thsn ::**•: fslrly satisfactory
variation., frtuu "acceded" to "yowled-"
The prisoner at the tar uo longer
need say that b* I. Innocent. H.* can
bebtile It or bawl It or blurt It or
breatb* It. to n— but one letter of the
alphabet The vindictive district attorney can bark bis qoestltms. tb* Uw-
jer for tbe *l**fi ti-c ran boom bis "1-
jectlons. tbe .pert.ton m*y either l»rU-
Ue their Indignant protect or blubber
fjbelr symiwtby. Rut tlie merit of such n
t la not simply lhat It facilitates the
j-puitLgentent of dialogue. A thorough
udy of tbe ;■<■ .uhatttutcs for "said"
■wi;: easily .uggest the plot and the
chancterlxatlun that must prece_le dialogue. Tbe letter (* ln Itself Is a compendium of plot and a gallery of portraits. Given somebody who cachl-
Bales, another wbo . Im- Ll.-*. another
vbo coo*, another wbo croons, sn-
other wbo chslicncea, another wbo con-
fe**e* antl minor characten wbo cry.
croak, commune and cut In, and it ls
plain that we have a scenario almost
ready made.-New York Po*t.
Wend*efu| Carving.
Dr. Peter Ollrer, wbo tlvetl In Fng*
land daring the early part of tbe eighteenth century, tells of seeing a carved
cherry stone which would be a wonder
even In tbla age of floe tools and fine
. workmanship. Tbe . tooe was one
from a common cherry, aad u|ton it
. were carved the heads of \2l po!*-*,
kings, queens, etu|-«>rors, saints, etc.
Small as they must neres-mrll;' have
been. It Is announci-d on Uie a-nrtiarlti
of Profesaor Ollrer tbat with a pwd
-z*..i*-** tbe beds of the \*.*--. and kitigs
could readily If illstlngulsbetl from
thi«e of llie qnam and sa'nrs by their
miter, ami crown*. The gentleman
wh-. broticht thl. little wuodcr to I_ug-
land purchased tt in Prussia, allowing
tbe original owner £3.000 for hla treasure. Tblnk of U—PSjOOO for a cherry
P. A. tCi
-Advt.
Pianos tuned, phonographs te
paired 11. Schomberg tk Son. Ph. _.?.
about flve yean further along produc-
boarding and day pupils, either for ^ % ^^J wU|. ,Up JJ of ^
he high whool course, or the gram- nXtying object, altout thirty limes
mar crsrtes Full Information can b* ■ larger tbau they ap|war lo the unss-
had from W, A. Khedd. Telephone .luted eye.
Hut It was not until 1074 that Dr.
Hook* perfected the flnt relli-ctiui;
telescope In whlcb the spectrum wa.
perforated ao tbat object* could be
viewed by looking directly at them.
So through tbe year of ITT7 the tele
Miu Harker wishes to aonouncv: -x^ ta thti j,,,^. 0f tUrce*slve aa-
tbat chlldr*n of primary age and; uvnomera and optician, contained
those who are ready for primary, many change* and Improvements un*
work will be Instructed by means of til In 17t_3 William Herscbel liegait tbe
such Montes«orl apparatus as Is construction of a .|i*ctrum powerful In
practicable in combination wUh cbamcter and forty feet In total length
resulting from Mrs. dttfejffS^ -StUS
viewing the Imsge through lho system
of eyeglasses. Wltb tbls telcacope.
completed ki ITM), object* were magnified G.S00 time., and on tbe nlgbt
nelfs yeara of experience In primary work. 12-30-2t~Advt.
Dancing—Mis. Carrie Lewis' ad
vanced rltu for children Thursday ttier lt wa. BnUbed Hencbel disc**-
January 4: beginner* Tuertay. Jan-*1** «*• •trlh «I«»»« of tD* *>**«
nary », 3: SO. Fraiemity Annex. 8alorn-
Adults' evening class on application c. .« nu nt c QUI I *-C rAQTI P
Studio. 73U Cowper at Phone 71 OM. FLAG 0N 0LE BULL b LAb ,Lt*
12.-_t0._t—l_dvt. aurt mnd 8tripM 0v#r old NocwSQian
* • * * Colony,
C.stllleja Scbool reopens January Tbe ruins of Ole Hull cotle. ln the
« at the regular hour The second Kettle Creek country r>e*r Coudera-
port. Pa., will hereafter fly the stars
a _td .tripe*.
Ur. and Mrs. W. F. Un* and Mr.
and Mrs. Jame* Sulllvsn or Genesee.
Pa., msde an offer of a Urge flag each
year. Tbey bsT* already given Henry
• ,*.• " Oleeon. wbo has charge of tbe castle
Madame H. Foreman Kmricb *x- proiterty, a flag which will float from a
cmpltfies and -tnachea lb* wonderful tall flagpole U> bl erected
term begins January 22. New pupils msy enter at any time. Appointment, may be mad* with th* principal. Phon* ItOR.
12-2»-7l—Advi.
"BROTHER JONATHAN."
Car-Mr ot th. Patriet Who Qav. Us
This Lasting Title.
Jonathan Trumbull, tb* original
"Brother Jonathan," was born on OcL
12, 1710, In lacbanoo. Conn. He was
graduated from Harvard college In
177., preached a few years, then stud
led law, and at tb* ag* of twenty-
three ye*r. b* waa a member of tbe
assembly. Ue was chosen lieutenant
governor In 1700 and became ex officio
chief Justice of tbe superior coorL la
170N be refused to lake th* oath en
Joined on ■■■■'■-■■;■■ ot tbe crown, and In
tbe following year be was chosen governor. He wa. tbe only colonial governor who ea-jiouscd tbe cause of thc
peopl* lu tbelr struggle for Justice and
Independence.
In tbe abaence at congrcsa of tb*
Adamses aud Hancock from New England Trumbull was considered tb*
Whig leader In that region, and Waab.
Ington always placed Implicit reliance
upon his pstrlotlsm and energy. Wnsn
Waahlngton look charge of th* Continental army at Cambridge, Mass., lit
found It In want of ammunition aud
other supplies, snd this want continued more or less for months. Trumbull wa. then governor of ConnectlcoL
On on* occasion at a council of war,
wbeo there M*med to b* no way to
make provision against an attack by
tb* enemy. Washington said. "We
must consult llrotber Jonathan on Ihla
aubject** He did so, and the governor
was succeaaful In supplying msny of
tbe needs of the army.
When tb* army was afterward
spread over tbe country and difficulties aros* It wa. a common saying
among tbe officers as a byword, "We
ma.t roosult Rrotbcr Jonathan." TW
origin of tbls ['hr.se waa *v«ntnally
l-"t -sight of. and "llrotber Jonathan"
becam* a tiiie of our nationality. Ilk*
"John Hall" of England. Trumbull
died In Lebanon, Conn., oo Aug. 17,
IT--'.
Tbe castl* ruin, .(snd a reminder of
tbe Norwegian cnloolsts wbo, nnder
tbe leadership of Ole Ball. Norwegian
muslciaa-patrtot, came to Potter county Id 1632. "We are to found a n*w
Norway consectated to liberty. Up-
. ■» _ fixed with Independence end (irotectcd
by America's mlgbtr fug." said Ole
It VYeuIdn't Souwl W*IL "n" In an addre.*. Cboo*lng Potter
An Engllsb north country p*p*r county for bts colontaatloo scheme, be
art ot dancing as the
health, happiness, grace of mind and
body. Studio room 12. Madlson-
Thoits building. Phone 3lt.
11-11-tf—Advt.
. . ImpMiinleua Irritation.
"You *my the couple quarreled on
tbelr honeymoon7"
"Yes. You aee, they hadn't mnch to
start wltb, and tne honeymoon bad
got to It. last quarter." — Baltimore
American.
purchased from a Philadelphia land
owner for *10,000 11.144 acree of land
at tbe beadwaten of Kettiu creek, in
wbat U now Abbott and Steward*on
township*, laying oat the villages of
Oleona. New Norway. New Bergeu
and Wn!inu.
frown, upon the known jmbltlou of
tbe mayor of Its town to be m.de .
knight for his distinguished services In
receiving royalty and narrates fur tbe
benefit of tbe aspirant thl. anecdote.
When Adam Black, the Edinburgh pub
Usher, w*_ aounded on th* subject of
receiving knighthood be said: "Nae Turk Government Aide Wmrmmem.
nee; it wadna dee. Ton •**,* b« a-l-; Tbe Turkish government has made a
ed. "if a boy cam' Into ma shop and special appropriation of 11,060,000 to
aald. 'A hapetb o' slate pencil. Sir b* osed for tb* pnrcbss* of seed grains
Adam.* Jt wadna sound wceL" tor needy TurkUb f.rmrn to the Turk-
\ tih dominions.
Davies Auto
Repair Co*
1002 SUte Highway
REDWOOD CITY
I't.one Redwood 407
Expert auto mechanics. AH
kinds of engine, pump or machinery repair work a specialty
LA PEIRE & SON
GROCERS
821 Ramona Street
Phone 29
Palo Alto Market
Lauridaon ft Sonnicksor.
i-iii.m: SSI
S-M lnl.rr.llj A.M..
LOOK FOB
THE GOLD HEAD
OX III R WAOONH
"Safety First"
HUN
"Highest Class Work"
The F. THOMAS Parisian
Dyeing and Cleaning Works
nu ai-ma man.
PHON. 117
Why Not Start the New Year
Right by patronizing
Fortune's Taxi Service
Phone 19
Day and Night Servic
