Abscisic acid plays a key role in the regulation of date palm fruit ripening

Frontiers in Plant Science

Plant Science

Felix Shaya¹  Mira Carmeli-Weissberg¹  Amnon Bustan²  Itzhak David²  Yaara Barnea-Danino³  Smadar Harpaz-Saad⁴  Yochai Maytal⁴  Saar Elbar⁴ 

[1] Department of Fruit Tree Sciences, The Volcani Center, Agricultural Research Organization, Rishon LeZion, Israel;Ramat-Negev Desert Agro-Research Centre, Halutza, Israel;Southern Arava Research and Development, Hevel Eilot, Israel;The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot, Israel;

关键词: abscisic acid (ABA);    date palm;    ethylene;    fruit development;    fruit maturation;    fruit ripening;    Medjool;    Phoenix dactylifera;   

DOI  :  10.3389/fpls.2022.1066142

 received in 2022-10-10, accepted in 2022-12-21,  发布年份 2023

来源: Frontiers

【 摘 要 】

The date palm (Phoenix dactylifera L.) fruit is of major importance for the nutrition of broad populations in the world’s desert strip; yet it is sorely understudied. Understanding the mechanism regulating date fruit development and ripening is essential to customise date crop to the climatic change, which elaborates yield losses due to often too early occurring wet season. This study aimed to uncover the mechanism regulating date fruit ripening. To that end, we followed the natural process of date fruit development and the effects of exogenous hormone application on fruit ripening in the elite cultivar ‘Medjool’. The results of the current study indicate that the onset of fruit ripening occurre once the seed had reached maximum dry weight. From this point, fruit pericarp endogenous abscisic acid (ABA) levels consistently increased until fruit harvest. The final stage in fruit ripening, the yellow-to-brown transition, was preceded by an arrest of xylem-mediated water transport into the fruit. Exogenous ABA application enhanced fruit ripening when applied just before the green-to-yellow fruit color transition. Repeated ABA applications hastened various fruit ripening processes, resulting in earlier fruit harvest. The data presented supports a pivotal role for ABA in the regulation of date fruit ripening.

【 授权许可】

Unknown   
Copyright © 2023 Elbar, Maytal, David, Carmeli-Weissberg, Shaya, Barnea-Danino, Bustan and Harpaz-Saad