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molecular phylogenetic analysis of sulfate-reducing bacteria from deep sediment layers of the tropical West Pacific warm pool

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Acta Oceanologica Sinica 2006年第3期25卷 98-107页

作者： LUO Zhuhua YE Dezan HUANG Xiangling Key Laboratory of Marine Biogenetic Resource of State Oceanic Administration （ SOA） Third Institute of Oceanography SOA Xiamen 361005 China

The diversity of sulfate-reducing bacteria （SRB） from deep layers of deep-sea sediments [ more than 2 m bsf （below seafloor） ] of two sites （WO1 -3 and WPO1 -4） in a tropical West Pacific warm pool region was characterized by using molecular phylogenetic analysis. The results of culture-independent samples demonstrated that the dominant clones from both sites were related to Grampositive spore forming genus, Desulfotomaculum, which accounted for 36.8% of all the sequencing clones from Site WP01 - 3 and 62.8% from Site WP01 -4. However, the other SRB group which was generally reported to be predominant in the deep-sea sediments of other regions, δ- subclass of the proteobacteria was found to be in very low percentages. Therefore, it could be speculated that there existed a unique chemical environment in the deep-sea sediment of this warm pool region. When comparing the Desulfotomaculum sp. related sequences from both sites, it was revealed that though the Desulfotomaculum-like sequences from Site WP01 -3 were more diverse than those from Site WP01 -4, all these sequences from both sites showed high similarity and formed a new phylogenetically homogeneous cluster in the Desulfotomaculum genus which had never been reported before. Successful enrichment of SRB was only achieved from samples of Site WP01 -4 and the sequence analysis of culture-dependent samples further confirmed the dominance of Desulfotomaculum genus. But Desulfotomaculum-related sequences from culture-dependent and culture-independent samples belonged to two different clusters respectively. This difference showed the choice of cultivation to the microorganisms.

关键词： sulfate-reducing bacteria deep sediment tropical West Pacific warm pool molecular phylogenetic analysis

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A novel pathogen Fusarium cuneirostrum causing common bean(Phaseolus vulgaris)root rot in China

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Journal of Integrative Agriculture 2024年第1期23卷 166-176页

作者： Dong Deng Wenqi Wu Canxing Duan Suli Sun Zhendong Zhu Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Several fungal pathogens cause root rot of common bean,among which Fusarium *** the most common pathogens causing Fusarium root rot(FRR)*** has been becoming an increasingly severe disease of common bean in China,but the species of Fusarium *** remained ***,this study was performed to identify the pathogen causing common bean root rot in Liangcheng County,Inner Mongolia,*** Fusarium-like isolates were obtained after pathogen isolation and *** pathogenicity test indicated that eight isolates caused severe disease symptoms on common bean,while 11 other isolates were not *** eight pathogenic isolates,FCL1–FCL8,were identified as Fusarium cuneirostrum by morphological characterization and phylogenetic analysis using partial sequences of EF-1α,ITS,28S,and IGS *** range test showed that the representative *** isolate FCL3 was also pathogenic to mung bean,while not pathogenic to adzuki bean,chickpea,cowpea,faba bean,pea,and ***,50 common bean and 50 mung bean cultivars were screened for resistance to FRR,and seven highly resistant or resistant cultivars of common bean were identified,while no resistant cultivars of mung bean were *** study revealed that *** was one of common bean FRR pathogens in Inner Mongolia and it could induce mung bean root rot as *** our knowledge,this is the first report of *** causing FRR of common bean in China.

关键词： Fusarium cuneirostrum fusarium root rot pathogenicity molecular phylogenetic analysis Phaseolus vulgaris

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Description of a New Species of the Asian Newt Genus Tylototriton sensu lato(Amphibia:Urodela:Salamandridae) from Southwest China

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Asian Herpetological Research 2020年第4期11卷 282-296页

作者： Shize LI Gang WEI Yanlin CHENG Baowei ZHANG Bin WANG Department of Food Science and Engineering Moutai UniversityRenhuai 564500 GuizhouChina CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041SichuanChina Biodiversity Conservation Key Laboratory Guiyang CollegeGuiyang 50002 GuizhouChina College of Life Science Anhui UniversityHefei 230039AnhuiChina

The newt genus Tylototriton sensu lato is widely distributed in Eastern,Southeastern and Southern *** studies indicated that there still has been several cryptic species in the ***,we describe a new species of the genus from Guizhou Province,*** analyses based on mitochondrial DNA supported that the new species was resolved as an independent clade nested into the Tylototriton sensu lato *** morphology,the new species could be distinguished from its congeners by a combination of the following characters:large body size(SVL 76.8-85.2 mm in male and 76.3-87.4 mm in female);head longer than wide;snout truncate in dorsal view;tail length longer than the snout-vent length in males;the distal digit ends,ventral digits,peripheral area of cloaca and the tail s lower margin are orange;relative length of toesⅢ> Ⅳ> Ⅱ> Ⅰ> Ⅴ;the distal tips of the limbs greatly overlapping when the fore and hind limbs are pressed along the trunk;fingertips reach the level beyond the snout when the forelimbs are stretched forward.

关键词： China molecular phylogenetic analysis new species newts taxonomy

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A New Species of the Gekko japonicus Group(Squamata:Gekkonidae)from Southwest China

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Asian Herpetological Research 2021年第1期12卷 36-48页

作者： Yinmeng HOU Shengchao SHI Gang WANG Guocheng SHU Puyang ZHENG Yin QI Gaohui LIU Jianping JIANG Feng XIE CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization and Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041SichuanChina Key Laboratory of Bio-Resource and Eco-Environment of the Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065SichuanChina College of Chemistry and Life Science Chengdu Normal UniversityChengdu 611130SichuanChina College of Chemistry and Life Science Institute of Ecological Environment ProtectionChengdu 611130SichuanChina Yibin University Yibin 644000SichuanChina University of Chinese Academy of Sciences Beijing 100049China Chinese Research Academy of Environmental Sciences Beijing 100012China

A new species of the Gekko(Squa ma ta:Gekkonidae)is described from the border of Sichuan and Yunnan Province,southwest China,based on distinct morphological and molecular *** jinjiangensis *** distinguished from congeners by a combination of the following characters:size small(SVL 50.2–61.6 mm,n=13);nares in contact with rostral;interorbital scales between anterior corners of the eyes 20–24;ventral scales between mental and cloacal slit 146–169;midbody scale rows 111–149;ventral scale rows 31–47;subdigital lamellae on first toe 8–11,on fourth toe 11–15;no webbing in the fingers and toes;with tubercles on uapper surface of fore and hind limbs;precloacal pores 4–5 in males;postcloacal unilateral tubercles 1–2;dorsal surface of body with 8–9 large greyish brown markings between nape and *** molecular analyses,the new species is sister to ***,but separated from them by approximately 9.9%–12.2%in genetic divergence as shown by a fragment of the partial mitochondrial ND2 *** new species is the highest Gekko with elevation range from 2000 to 2476 *** surveys are recommended to better understand the occurrence and population status of the new species.

关键词： Gekko jinjiangensis sp.nov. Gekko japonicus group molecular phylogenetic analysis morphology Jinsha River

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