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transgenerational phenotypic plasticity of diapause induction and related fitness cost in a commercial strain of the parasitoid Aphidius ervi Haliday

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Insect Science 2021年第3期28卷 780-792页

作者： Muhammad Mubashir Saeed Kevin Tougeron Abu Bakar Muhammad Raza Muhammad Afzal Anjum Aqueel Guillaume Jean Le Goff Frangois Renoz Jennifer Pirotte Thierry Hance Department of Entomology University College of AgricultureUniversity of SargodhaSargodhaPakistan Earth and Life Institute Biodiversity Research CentreUniversite catholique de LouvainLouvain-la-Neuve1348Belgium

Diapause is an adaptation that insects have evolved to synchronize their life cycle with that of seasonal climatic changes and resources ***,cues for its induction are not always clear and,in some cases,a maternal effect may be *** the population level,just a part of the individuals may exhibit diapause with important consequences in terms of winter ***,clear indicators of diapause state are difficult to *** induction was thus investigated in the aphid parasitoid species Aphidius ervi Haliday(Hymenoptera:Braconidae)developing in the aphid Sitobion avenae(Hemiptera:Aphididae)at four crossed photothermal regimes(16℃and 8℃,16:8 h L:D and 8:16 h L:D),and during 2 successive *** analyzed the reliability of changes in mummy color to assess for the diapausing state compared to dissections,and we measured parasitoid morphological and physiological *** observed that the proportion of dark brown mummies increased after one generation under low photothermal regime compared to other *** diapause was recorded at 16℃,16:8 h L:D,while we observed 16.2%and 67.5%diapause incidence at 8℃,8:16 h L:D,at 1st and 2nd generation,*** induction is thus increased by short day-length conditions and low temperatures as well as by maternal *** parasitoid life-history traits(weight,size,fat content,water content,egg-load,and longevity)were affected by the photothermal regime and/or the *** results raise new questions on the environmental thresholds needed to induce diapause and on survival and adaptation potential of commercially available parasitoid strains in different environments.

关键词： dormancy life-history traits mummy color photothermal regimes transgenerational plasticity

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Clonal transgenerational Effects Transmit for Multiple Generations in a Floating Plant

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Phyton-International Journal of Experimental Botany 2023年第5期92卷 1589-1601页

作者： Xiao-Mei Zhang Yu Jin Wei Xue Jun-Qin Gao Ning-Fei Lei Jin-Song Chen Fei-Hai Yu College of Life Science Sichuan Normal UniversityChengdu610101China Institute of Wetland Ecology&Clone Ecology Taizhou UniversityTaizhou318000China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing100083China College of Ecology and Environment Chengdu University of TechnologyChengdu610059China

Environmental conditions of a parent plant can influence the performance of their clonal offspring,and such clonal transgenerational effects may help offspring adapt to different ***,it is still unclear how many vegetative generations clonal transgenerational effects can transmit for and whether it depends on the environmental conditions of the *** grew the ancestor ramets of the floating clonal plant Spirodela polyrhiza under a high and a low nutrient level and obtained the so-called 1^(st)-generation offspring ramets of two types(from these two environments).Then we grew the 1^(st)-generation offspring ramets of each type under the high and the low nutrient level and obtained the so-called 2^(nd)-generation offspring ramets of four *** repeated this procedure for another five times and analyzed clonal transgenerational effects on growth,morphology and biomass allocation of the 1^(st)-to the 6^(th)-generation offspring *** found positive,negative or neutral(no)transgenerational effects of the ancestor nutrient condition on the offspring of ***,depending on the number of vegetative generations,the nutrient condition of the offspring environment and the traits *** observed significant clonal transgenerational effects on the 6^(th)-generation offspring;such effects occurred for all three types of traits(growth,morphology and allocation),but varied depending on the nutrient condition of the offspring environment and the traits *** results suggest that clonal transgenerational effects can transmit for multiple vegetative generations and such impacts can vary depending on the environmental conditions of offspring.

关键词： Clonal plant clonal parental effect maternal effect transgenerational plasticity multi-generation experiment

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Research Progress of Maternal Environmental Effects in Resource-based Regions

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Plant Diseases and Pests 2020年第4期11卷 31-35页

作者： Li Yanjiao Tong Weishuang Gao Huashan Zhao Yan Wang Limin Pingdingshan University Key Laboratory of Ecological Restoration in Hilly AreaPingdingshan 467000China Forestry College Henan University of Science&TechnologyLuoyang 471003China

Heavy metal pollution is common in resource-based ***,the morphological,physiological and biochemical mechanisms of plants transmitting environmental information to their offspring in environments polluted by heavy metals have not been studied *** soybean,an annual self-pollinated plant in Huang-Huai-Hai region,as the research object,the morphological,physiological and biochemical indexes and heavy metal enrichment and distribution characteristics of plants under heavy metal stress were monitored continuously for about three generations,and the trans-generational differences of soybean reproduction,vegetative growth,stress resistance and life cycle in heavy metal stress environment were *** results will be helpful to better understand the long-term adaptive strategy of plants to heavy metal stress and provide the theory basis for ecological security of soybean and other crops under heavy metal stress.

关键词： Maternal environmental effect Glycine max(L.)Merr. Heavy metal stress Plant life history Resource-based regions transgenerational plasticity

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