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Engineered Cleistogamy in Camelina sativa for bioconfinement

Horticulture Research 2023年第2期10卷 275-285页

作者： Debao Huang Liwei Gao jeremy mcadams Fangzhou Zhao Hongyan Lu Yonghui Wu jeremy Martin Sherif MSherif Jayasankar Subramanian Hui Duan Wusheng Liu Department of Horticultural Science North Carolina State UniversityRaleighNC 27607USA College of Life Sciences Ganzhou Normal UniversityGanzhouJiangxi 341000China National Center for Soybean Improvement State Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingJiangsu 210095China College of Food Science and Engineering Wuhan Polytechnic UniversityWuhanHubei 430048China Sandhills Research Station North Carolina State UniversityJackson SpringsNC 27281USA Vineland Research Station Department of Plant AgricultureUniversity of GuelphVinland StationON LOR 2E0Canada Alson H.Smith Jr.Agricultural Research and Extension Center School of Plant and Environmental SciencesVirginia TechWinchesterVA 22602USA USDA-ARS U.S.National ArboretumFloral and Nursery Plants Research UnitBeltsville Agricultural Research Center(BARC)-WestBeltsvilleMD 20705USA

Camelina sativa is a self-pollinating and facultative outcrossing oilseed *** engineering has been used to improve camelina yield potential for altered fatty acid composition,modified protein profiles,improved seed and oil yield,and enhanced drought *** deployment of transgenic camelina in the field posits high risks related to the introgression of transgenes into nontransgenic camelina and wild ***,effective bioconfinement strategies need to be developed to prevent pollen-mediated gene f low(PMGF)from transgenic *** the present study,we overexpressed the cleistogamy(i.e.f loral petal non-openness)-inducing PpJAZ1 gene from peach in transgenic *** camelina overexpressing PpJAZ1 showed three levels of cleistogamy,affected pollen germination rates after anthesis but not during anthesis,and caused a minor silicle abortion only on the main *** also conducted field trials to examine the effects of the overexpressed PpJAZ1 on PMGF in the field,and found that the overexpressed PpJAZ1 dramatically inhibited PMGF from transgenic camelina to non-transgenic camelina under the field ***,the engineered cleistogamy using the overexpressed PpJAZ1 is a highly effective bioconfinement strategy to limit PMGF from transgenic camelina,and could be used for bioconfinement in other dicot species.

关键词： drought expressing limit

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