A multifaceted comparison between the fruit-abscission and fruit-retention cultivars in ornamental crabapple
文献类型： 外文期刊
作者： Wang, Xue 1 ; Wang, Yi 3 ; Yan, Shufang 4 ; Sun, Xuan 2 ; Liu, Hongyan 2 ; Cheng, Beibei 1 ; Xu, Xingxing 1 ; Wei, Zunzheng 2 ; Zhang, Guojun 1 ;
作者机构： 1.Hebei Normal Univ Sci & Technol, Coll Hort Sci & Technol, Hebei Key Lab Hort Germplasm Excavat & Innovat Uti, Qinhuangdao, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Grassland Flowers & Ecol, Beijing, Peoples R China
3.China Agr Univ, Coll Hort, Beijing, Peoples R China
4.Hebei Acad Forestry & Grassland Sci, Hebei Forest City Construction Technol Innovat Ctr, Shijiazhuang, Peoples R China
关键词： ornamental crabapple; fruit abscission; abscission zone; cell wall hydrolase; transcriptomics
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： The ornamental crabapple is a multipurpose landscaping tree that bears brilliant fruit throughout the winter. However, whether or not its fruit persists after maturation is specifically correlated to cultivar characteristics. In this work, we screened two different types that display fruit-retention ("Donald Wyman," "Red Jewel," and "Sugar Tyme") and fruit-abscission ("Radiant" and "Flame") in Northern China across the whole winter using multi-year successional records. Fruit-abscission was determined predominantly by the abscission zone established at the base of the pedicel, regardless of fruit size and pedicel length, according to the results of the comparative research. The primary physiological rationale was the accumulation of hydrolases activity (pectinesterase, cellulase, polygalacturonase, and beta-glucosidase). Comparative transcriptomics further identified a number of upregulated DEGs involved in the synthesis pathways of canonical phytohormones, such as ethylene, jasmonic acid, abscisic acid, and cytokinin, as well as 12 transcription factors linked in downstream signaling in fruit-abscission cultivars. Finally, a model incorporating multi-layered modulation was proposed for the fruit abscission of ornamental crabapple. This study will serve as the foundation for the development of fruit-viewing crabapples that have an extended ornamental lifetime.
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