Coreless apples generated by the suppression of carpel genes and hormone-induced fruit set  

作　　者：Hilary S.Ireland Sumathi Tomes Ian C.Hallett Sakuntala Karunairetnam Karine M.David Jia-Long Yao Robert J.Schaffer 

机构地区：[1]The New Zealand Institute for Plant and Food Research Ltd,Private Bag 92196,Auckland Mail Centre,Auckland 1142,New Zealand [2]School of Biological Sciences,The University of Auckland,Private Bag 92019,Auckland Mail Centre,Auckland 1142,New Zealand

出　　处：《Fruit Research》2021年第1期3-11,共9页果树研究（英文）

基　　金：The New Zealand Ministry for Business Innovation and Employment programme‘Pipfruit:a juicy future’(C06X0705);the New Zealand Ministry for Primary Industries CORE funding supported this work.

摘　　要：Seedless fruits have high consumer appeal and have made seeded varieties obsolete in some crops.In seedless apple varieties,core tissues which normally contain the seed can be unpalatable,reducing the seedless appeal.Apples are accessory fruit with edible flesh derived from hypanthial tissue–a floral tube fused to a compound ovary.Here we show that through suppression of AGAMOUS-like carpel identity genes and hormone induced fruit set,it is possible to generate coreless and therefore seedless apples.Suppression of AGAMOUS-like genes increased petal whorls and fully eliminated carpel development.Treatments with a combination of gibberellin,cytokinin and auxin,rather than single treatments,were required for fruit initiation in these lines.Transcriptomic analysis of agamous RNAi lines suggested conservation of AGAMOUS-dependent gene networks between apple and Arabidopsis.In the absence of all sexual tissues,the developing fruit continues to grow and follow a ripening process similar to that of a regular apple.The coreless phenotype offers a new concept for pipfruit consumers improving convenience and reducing food waste.

关 键 词：FUSED SUPPRESSION eliminated 

分 类 号：Q94[生物学—植物学]