Cytokinin but not gibberellin application had major impact on the phenylpropanoid pathway in grape

作     者：Kamal Tyagi Itay Maoz Bettina Kochanek Noa Sela Larry Lerno Susan EEbeler Amnon Lichter Kamal Tyagi;Itay Maoz;Bettina Kochanek;Noa Sela;Larry Lerno;Susan E.Ebeler;Amnon Lichter

作者机构：Department of Postharvest ScienceAgricultural Research OrganizationThe Volcani CenterRishon LeZionIsrael Department of Viticulture and EnologyUniversity of CaliforniaDavisCA 95616USA Department of Plant PathologyAgricultural Research OrganizationThe Volcani CenterRishon LeZionIsrael Food Safety and Measurement FacilityUniversity of CaliforniaDavisCA 95616USA 

出 版 物：《Horticulture Research》 (园艺研究（英文）)

年 卷 期：2021年第8卷第1期

页      面：599-613页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 1001[医学-基础医学(可授医学、理学学位)] 09[农学] 0901[农学-作物学] 0703[理学-化学] 0836[工学-生物工程] 0902[农学-园艺学] 090201[农学-果树学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：a United States-Israel Binational Agricultural Research and Development Fund Grant(No.IS-4957-16R) The sequencing was carried out at the UC Davis Genome Center DNA Technologies and Expression Analysis Core,supported by NIH Shared Instrumentation Grant 1S10OD010786-01 

主　　题：CPPU impact treatment 

摘      要：Cytokinin and gibberellic acid(GA)are growth regulators used to increase berry size in seedless grapes and it is of interest to understand their effects on the phenylpropanoid pathway and on ripening *** 3 and synthetic cytokinin forchlorfenuron(N-(2-chloro-4-pyridyl)-N′-phenylurea,CPPU)and their combination were applied to 6 mm diameter fruitlets of‘Sable Seedless’,and berries were sampled 51 and 70 days(d)following *** treatments increased berry size and delayed sugar accumulation and acid degradation with a stronger effect of ***,but not GA,reduced berry color and the levels of *** CPPU reduced the levels of anthocyanins by more than 50%,the combined treatment of GA+CPPU reduced the levels by about 25%at 51 *** treatment had minor effects on flavonols content but increased the levels of monomeric flavan-3-ols by more than *** analysis using HPLC showed that proanthocyanidin content was significantly increased by CPPU,whereas mean degree of polymerization was reduced from 26 to *** analysis by GC-MS showed changes in composition with CPPU or GA treatment with potential impact on ***-seq analysis showed that GA had a minor overall effect on the transcriptome whereas CPPU had pronounced effects on gene expression at both 51 and 70 *** the control and CPPU at similar Brix of ca.19.7°,a reduced expression of stilbene synthases(STSs)including their regulators MYB14 and MYB15,and other phenylpropanoid-related genes was observed in CPPU-treated ***,our study shows that CPPU had a major influence on the phenylpropanoid pathway and affected multiple ripening-related processes.