273,406 research outputs found
WEN-LI MA & LI-ZHEN LI (2012) A new species of Lesteva Latreille (Coleoptera, Staphylinidae Omaliinae) from Zhejiang, East China. Zootaxa, 3530, 74-76.
No full textMA, WEN-LI, LI, LI-ZHEN (2012): WEN-LI MA & LI-ZHEN LI (2012) A new species of Lesteva Latreille (Coleoptera, Staphylinidae Omaliinae) from Zhejiang, East China. Zootaxa, 3530, 74-76. Zootaxa 3564 (1): 68, DOI: 10.11646/zootaxa.3564.1.7, URL: http://dx.doi.org/10.11646/zootaxa.3564.1.
C-Jun N-terminal kinases/c-Jun and p38 pathways cooperate in ceramide-induced neuronal apoptosis
No full textUnderstanding the regulation of the apoptotic program in neurons by intracellular pathways is currently a subject of great interest. Recent results suggest that c-Jun N-terminal kinases (JNK), mitogen-activated protein kinases and the transcription factor c-Jun are important regulators of this cell death program in post-mitotic neurons following survival-factor withdrawal. Our study demonstrates that ceramide levels increase upon survival-factor withdrawal in primary cultured cortical neurons. Furthermore, survival-factor withdrawal or addition of exogenous c2-ceramide induces JNK pathway activation in these cells. Western blot analyses of JNK and c-Jun using phospho-specific antibodies reveal that JNK and subsequent c-Jun phosphorylation occur hours before the initiation of apoptosis, reflected morphologically by neurite retraction and fragmentation, cell-body shrinkage and chromatin fragmentation. Immunocytochemistry using the same antibodies shows that phospho-JNK are localized in the neurites of control neurons and translocate to the nucleus where phospho-c-Jun concurrently appears upon ceramide-induced apoptosis. To determine if ceramide-induced c-Jun activation is responsible for the induction of the apoptotic program, we performed transient transfections of a dominant negative form of c-Jun, truncated in its transactivation region. Our results show that DNc-Jun partially protects cortical neurons from ceramide-induced apoptosis. Treatment of dominant negative c-Jun-expressing neurons with the pharmacological inhibitor of p38 kinase, SB203580, completely blocked neuronal death. Thus our data show that p38 and JNK/c-Jun pathways cooperate to induce neuronal apoptosis
Lesteva Ma & Li, 2012, new species
No full textLesteva (s. str.) brevimacula Ma and Li, new species (Figs. 1–3) Type material. Holotype: CHINA: Zhejiang Prov.: 3, Hangzhou City, Mt.Wuchaoshan, 30 ° 10 ’N, 120 °00’E, 10.iv. 2011, alt. 200 m, PENG Zhong & ZHU Jian-Qing leg. Paratypes: CHINA: Zhejiang Prov.: 3 3, 4 ƤƤ, same label data as holotype; 2 3, 2 ƤƤ, Lin'an City, East Tianmushan, 30 ° 21 ’N, 119 ° 25 ’E, 13.iv. 2011, alt. 1,050–1,100 m, PENG Zhong & ZHU Jian-Qing leg.; 1 Ƥ, Lin'an City, East Tianmushan, 30 ° 21 ’N, 119 ° 25 ’E, 31.v. 2010, alt. 830–900 m, WANG, XU & ZHU leg.; 13, Anji County, Longwangshan, 30 ° 24 ’N, 119 ° 25 ’E, 24.iv. 2004, alt. 300–500 m, CHEN Jing leg. Description. Measurements and ratios: BL 3.5–4.6 mm. Holotype: HL 0.65 mm, HW 0.68 mm, PL 0.73 mm, PW 0.78 mm, EL 1.60 mm, EW 1.40 mm, HL/HW 0.96, HW/PW 0.87, PL/PW 0.94. Habitus as in Fig. 1. Length 4.6 mm. Black, mouth-parts and antennae rufo-testaceous; legs dark, tarsi yellowishbrown. Each elytron with one small darkish red spot near middle. Pubescence pale, evident and recumbent on whole body. Head sub-triangular, coarsely and sparsely punctate, widest across eyes and slightly broader across compound eyes than long; vertex moderately depressed; eyes prominent; ocelli distinct, distance between them slightly smaller than that from lateral margin of each ocellus to mesal margin of eye; postocular margins less than half length of longitudinal diameter of eye; antennae overlapping base of pronotum by two terminal segments when pulled posteriad; antennomeres I moderately robust, II much shorter and narrower than I, III–X each elongate and thickened in apical half, XI as long as I, nearly fusiform; relative length of each antennomere from base to apex as 15: 9: 10: 9: 10: 10: 10: 10: 9: 9: 15. Pronotum subcordate, moderately convex, widest near anterior third, slightly wider than head; lateral margins rounded at anterior two-thirds and nearly straight at posterior third; more coarsely and densely punctate than on head; with paired shallow transverse discal impressions, one median and two admesal longitudinal antebasal impressions. Scutellum subtriangular, surface with fine punctation and pubescence. Elytra subtrapezoidal, gradually dilated posteriorly, posterior angles broadly rounded; punctation and pubescence slightly finer and sparser than those on pronotum. Abdomen broad, widest at segment IV (first visible abdominal segment), then distinctly narrowed posteriorly. Tergites with dense, fine punctation and decumbent pubescence; tergites IV–V each with one pair of tomentose admesal patches. Male. Sternite VIII transverse, posterior margin broadly emarginate. Aedeagus (Figs. 2–3) length 0.74 mm, parameres longer than median lobe. Female. Protarsomeres I–IV not dilated. Otherwise similar to male. Distribution. East China: Zhejiang Province. Bionomics. The type series were collected by sifting leaf litter and wet moss at the streamside. Etymology. The specific epithet ‘ brevimacula ’ means ‘small spot’, referring to the small spots of elytra. Remarks. The new species is most similar to Lesteva cooteri Rougemont in sharing a pair of small elytral spot, but can be quickly separated by the larger size and aedeagus with parameres being longer than the median lobe.Published as part of Ma, Wen-Li & Li, Li-Zhen, 2012, A new species of Lesteva Latreille (Coleoptera, Staphylinidae, Omaliinae) from Zhejiang, East China, pp. 74-76 in Zootaxa 3530 on pages 74-75, DOI: 10.5281/zenodo.21090
Euodynerus Ma & Chen & Li 2017
No full textGenus Euodynerus Dalla Torre, 1904 Euodynerus Dalla Torre 1904: 38; Blüthgen 1938: 277; van der Vecht 1967: 29, 31; Giordani Soika 1994: 246. Type species Vespa dantici Rossi 1790, by subsequent designation (Blüthgen 1938). Diagnosis. Cephalic fovea medium-sized to large (Figs 7, 29, 39, 48, 57, 62, 66); pronotal carina generally complete; pretegula and epicnemial carina well developed; posterior end of parategula not reaching apex of tegula (Figs 60, 61); posterior margin of horizontal face carinate and dentate on metanotum (Figs 12, 32); in dorsal view, T1 broader than length, without transverse carinae basally, and with semitransparent apical lamella (Figs 1–2, 15, 21–22, 25–26, 33–34, 42–43, 51–52); apical flagellomere of male bent backward (Figs 6, 13, 19, 31, 38, 47, 56). Distribution. Worldwide.Published as part of Ma, Zhenxia, Chen, Bin & Li, Tingjing, 2017, Four new species of Euodynerus Dalla Torre, 1904 (Hymenoptera: Vespidae: Eumeninae) from China, with a key to the Chinese species, pp. 245-258 in Zootaxa 4300 (2) on page 246, DOI: 10.11646/zootaxa.4300.2.6, http://zenodo.org/record/83813
Phytotoxic neo-clerodane diterpenoids from the aerial parts of Scutellaria barbata
No full textLi, Hang-Ying, Wei, Wen-Jun, Ma, Kai-Liang, Zhang, Jie-Yao, Li, Ya, Gao, Kun (2020): Phytotoxic neo-clerodane diterpenoids from the aerial parts of Scutellaria barbata. Phytochemistry (112230) 171: 1-12, DOI: 10.1016/j.phytochem.2019.112230, URL: http://dx.doi.org/10.1016/j.phytochem.2019.11223
Fig. 1 in Phytotoxic neo-clerodane diterpenoids from the aerial parts of Scutellaria barbata
No full textFig. 1. Structures of compounds 1–34.Published as part of Li, Hang-Ying, Wei, Wen-Jun, Ma, Kai-Liang, Zhang, Jie-Yao, Li, Ya & Gao, Kun, 2020, Phytotoxic neo-clerodane diterpenoids from the aerial parts of Scutellaria barbata, pp. 1-12 in Phytochemistry (112230) 171 on page 5, DOI: 10.1016/j.phytochem.2019.112230, http://zenodo.org/record/829389
Xizang feng ma qi yi shu
No full textBen shu yi tu wen bing mao de xing shi dui feng ma qi yi shu jin xing le jiao quan mian de jie shao. gai shu zhu yao jie shao feng ma qi de qi yuan, feng ma qi de han yi feng ma qi de xing zhuang he zhong lei yi ji feng ma qi yi shu de te se he feng g
Lesteva brevimacula Ma & Li 2012
No full text<i>Lesteva</i> (<i>s. str.</i>) <i>brevimacula</i> Ma & Li, 2012 <p>(Figs 1B, 3 C–D, 4D–F, 34)</p> <p> <i>Lesteva</i> (<i>s. str.</i>) <i>brevimacula</i> Ma & Li, 2012: 74.</p> <p> <b>Type locality.</b> Mt. Wuchao, Mt. East Tianmu and Mt. Longwang, Zhejiang Province, China.</p> <p> <b>Type material examined. Holotype:</b> ♂: <b>CHINA:</b> ‘ China: Zhejiang Prov., Hangzhou City (杭州市), Mt. Wuchao (午潮山), 30°10’N, 120°00’E, 10.iv. 2011, 200 m, Peng & Zhu leg.’. <b>Paratypes: CHINA:</b> 3 ♂♂, 4 ♀♀: same label data as holotype; 2 ♂♂, 2 ♀♀: ‘ China: Zhejiang Prov., Lin’an City (临安市), Mt. East Tianmu, 30°21’N, 119°25’E, 13.iv.2011, 1,050–1,100 m, Peng & Zhu leg. ’; 1 ♀: ‘ China: Zhejiang Prov., Lin’an City (临安 市), Mt. East Tianmu, 30°21’N, 119°25’E, 31.v.2010, 830– 900 m, Wang, Xu & Zhu leg. ’; 1 ♂: ‘ China: Zhejiang Prov., Hangzhou City (杭州市), Anji County (安吉县), Mt. Longwang, 30°24’N, 119°25’E, 24.iv.2004, 300– 500 m, Jing Cheng leg. ’</p> <p> <b>Additional material examined</b> (28 exs): 4 ♂♂, 1 ♀: ‘ China: Anhui Prov., Anqing City (安庆市), Qianshan County (潜山县), Mt. Tianzhu (天柱山), alt. 960 m, 23.iv.2005, Hu & Tang leg.’ (SNUC); 5 ♂♂, 4 ♀♀: ‘ China: Zhejiang Prov., Hangzhou City (杭州市), Anji County (安吉县), Mt. Longwang (龙王山), 350–1200 m, 23– 25.iv.2006, He, Ling, Li, Tang, Wang & Zhu leg.’ (SNUC); 4 ♂♂: ‘ China: Zhejiang Prov., Lin’an City (临安市), Mt. Tianmu (天目山), Gaoling (告岭), alt. 800 m, 26.iv.2008, He & Tang leg.’ (SNUC); 1 ♂, 9 ♀♀: ‘ China: Zhejiang Prov., Lin’an City (临安市), Mt. East Tianmu (东天目山), 200–1150 m, 09–13.iv.2011, Peng & Zhu leg.’ (SNUC).</p> <p> <b>Comment.</b> The original description was based on 14 specimens collected in Mt. Wuchao and Mt. East Tianmu, Zhejiang (Ma & Li 2012). The above material from Anhui represent new provincial records (Fig. 34). For illustrations of <i>L. brevimacula</i> see Figs 1B, 3 C–D, 4D–F and Ma & Li (2012: figs 1–3).</p>Published as part of <i>Cheng, Zhi-Fei, Li, Li-Zhen & Peng, Zhong, 2019, New species and new records of Lesteva Latreille, 1797 (Coleoptera Staphylinidae: Omaliinae) from China, pp. 1-39 in Zootaxa 4560 (1)</i> on pages 3-4, DOI: 10.11646/zootaxa.4560.1.1, <a href="http://zenodo.org/record/2627254">http://zenodo.org/record/2627254</a>
- …
