通常所说的串珠镰孢菌Fusarium moniliforme Sheld.是镰孢菌属Fusarium Link中最重要的植物病原菌之一,可侵染多种作物引起严重病害,特别是在禾谷类作物上,如玉米穗腐病、小麦赤霉病、水稻恶苗病、高粱穗腐病等（White 1999；Parry et a...通常所说的串珠镰孢菌Fusarium moniliforme Sheld.是镰孢菌属Fusarium Link中最重要的植物病原菌之一,可侵染多种作物引起严重病害,特别是在禾谷类作物上,如玉米穗腐病、小麦赤霉病、水稻恶苗病、高粱穗腐病等（White 1999；Parry et al．1995；Nyvall et al．1999；Frederiksen＆Odvody 2000：Leslie et al.2005）。展开更多
The rotifer Brachionus plicatilis complex,including B.plicatilis O.F.Müller(formerly called L-type)and B.rotundiformis Tschugunoff(formerly called S-type),as an excellent live food for many species of marine fish...The rotifer Brachionus plicatilis complex,including B.plicatilis O.F.Müller(formerly called L-type)and B.rotundiformis Tschugunoff(formerly called S-type),as an excellent live food for many species of marine fish larvae,has been widely used in most of the modern marine hatcheries in the world.Rotifer resting eggs(i.e.dormant eggs)are considered as the best or ideal form for storage and application of the rotifers in aquaculture.Numerous studies have been therefore carried out on the resting eggs,especially on their dormancy and hatching.This paper reviews the relevant work on controlling factors of hatching,including both the internal factors(e.g.dormant period,genotype,and maternal culture history)and the external ones(e.g.preservation conditions and methods,preservation period,incubation conditions,and sterilizing or processing of the eggs).The possible functional mechanisms of these factors for the hatching of resting eggs are also discussed.展开更多
Research progress of B. dorsalis and its species complex in Taiwan region and abroad was summarized from the aspects of classification, origin, transmission, distribution, host, biological characteristics and adaptabi...Research progress of B. dorsalis and its species complex in Taiwan region and abroad was summarized from the aspects of classification, origin, transmission, distribution, host, biological characteristics and adaptability to environmental conditions, in order to provide references and basis for researching B. dorsalis and its species complex in China.展开更多
The genus Cylindrotheca consists of a small group of marine diatoms with a few species described. Eleven isolates of diatoms identified as Cylindrotheca closterium morphologically were obtained from Jiaozhou Bay with ...The genus Cylindrotheca consists of a small group of marine diatoms with a few species described. Eleven isolates of diatoms identified as Cylindrotheca closterium morphologically were obtained from Jiaozhou Bay with their nuclear-encoded small-subunit ribosomal RNA （SSU rDNA） and chloroplast-encoded rbcL gene sequences determined in this study. Interestingly, very high sequence divergences of SSU rDNA and rbcL gene were found among these isolates, and numerous nucleotide variation of rbcL gene caused relatively few variation of deduced amino acid sequence. Phylogenetic analyses based on SSU rDNA and rbcL gene, respectively, grouped the isolates into 6 clades. Phylogenetic tree of SSU rDNA placed all the Cylindrotheca isolates together, separating them into two lineages clearly. LineageⅠ was composed of the eleven C. closterium isolates obtained in this study together with another C. closterium isolate, but some clades were not well supported. LineageⅠwas contained two C. closterium isolates and one C. fusiformis isolate. Phylogenetic analysis of rbcL gene also separated the Cylindrotheca isolates into two well-defined lineages. The eleven C. closterium isolates formed a lineage and all clades were supported strongly. Statistical comparisons of SSU rDNA indicated that the average distance within lineageⅠwas significantly higher than that of other microalgae species （P 〈0.01）. These results suggested the existence of cryptic species within C. closterium.展开更多
文摘通常所说的串珠镰孢菌Fusarium moniliforme Sheld.是镰孢菌属Fusarium Link中最重要的植物病原菌之一,可侵染多种作物引起严重病害,特别是在禾谷类作物上,如玉米穗腐病、小麦赤霉病、水稻恶苗病、高粱穗腐病等（White 1999；Parry et al．1995；Nyvall et al．1999；Frederiksen＆Odvody 2000：Leslie et al.2005）。
基金National Basic Research and Development Program(2009CB119200)Key Projects in the National Science & Technology Pillar Program in the Eleventh Five-Year Plan Period(2006BAD08A18)Liaoning Entry-Exit Inspection and Quarantine Bureau Scientific Research Item
文摘The rotifer Brachionus plicatilis complex,including B.plicatilis O.F.Müller(formerly called L-type)and B.rotundiformis Tschugunoff(formerly called S-type),as an excellent live food for many species of marine fish larvae,has been widely used in most of the modern marine hatcheries in the world.Rotifer resting eggs(i.e.dormant eggs)are considered as the best or ideal form for storage and application of the rotifers in aquaculture.Numerous studies have been therefore carried out on the resting eggs,especially on their dormancy and hatching.This paper reviews the relevant work on controlling factors of hatching,including both the internal factors(e.g.dormant period,genotype,and maternal culture history)and the external ones(e.g.preservation conditions and methods,preservation period,incubation conditions,and sterilizing or processing of the eggs).The possible functional mechanisms of these factors for the hatching of resting eggs are also discussed.
基金Supported by Key Disciplinary Developing Project of Forest Protection and Zoology from Yunnan Province(Grant No.XKZ200905)Science and Technology Project of Jiangxi Provincial Department of Education(GJJ08471)~~
文摘Research progress of B. dorsalis and its species complex in Taiwan region and abroad was summarized from the aspects of classification, origin, transmission, distribution, host, biological characteristics and adaptability to environmental conditions, in order to provide references and basis for researching B. dorsalis and its species complex in China.
基金This research was financially supported by an open project of The Key Laboratory of Mariculture of The Ministry of Education of China affiliated to 0cean umversity of China(200405)by the National Natural Science Foundation of China(30471318,40176028).
文摘The genus Cylindrotheca consists of a small group of marine diatoms with a few species described. Eleven isolates of diatoms identified as Cylindrotheca closterium morphologically were obtained from Jiaozhou Bay with their nuclear-encoded small-subunit ribosomal RNA （SSU rDNA） and chloroplast-encoded rbcL gene sequences determined in this study. Interestingly, very high sequence divergences of SSU rDNA and rbcL gene were found among these isolates, and numerous nucleotide variation of rbcL gene caused relatively few variation of deduced amino acid sequence. Phylogenetic analyses based on SSU rDNA and rbcL gene, respectively, grouped the isolates into 6 clades. Phylogenetic tree of SSU rDNA placed all the Cylindrotheca isolates together, separating them into two lineages clearly. LineageⅠ was composed of the eleven C. closterium isolates obtained in this study together with another C. closterium isolate, but some clades were not well supported. LineageⅠwas contained two C. closterium isolates and one C. fusiformis isolate. Phylogenetic analysis of rbcL gene also separated the Cylindrotheca isolates into two well-defined lineages. The eleven C. closterium isolates formed a lineage and all clades were supported strongly. Statistical comparisons of SSU rDNA indicated that the average distance within lineageⅠwas significantly higher than that of other microalgae species （P 〈0.01）. These results suggested the existence of cryptic species within C. closterium.
