|Table of Contents|

Analysis of Dormant-related DAM Gene Expression Characteristics and Hormonal Regulation Responses in Different Chilling Peaches

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年03
Page:
27-34
Research Field:
Publishing date:

Info

Title:
Analysis of Dormant-related DAM Gene Expression Characteristics and Hormonal Regulation Responses in Different Chilling Peaches
Author(s):
LI Haiyan; YANG Aimin; LIANG Ruizheng; LU Tailiang; LIU Fengqiong; WAN Baoxiong
(Guangxi Academy of Specialty Crops,Guilin,Guangxi 541004)
Keywords:
peach; dormancy; DAM gene; hormone; expression characteristics
PACS:
-
DOI:
10.11937/bfyy.20213198
Abstract:
‘Nanshan Tiantao’(CR 200 hours),‘Ruiguang No.51’(CR 400 hours) and ‘Chunmei’(CR 600 hours) were taken as materials and sampled about every half a monthfrom the beginning of a large number of deciduous periods to the period of flower bud sprouting.The expression levels of DAM genes in flower buds during different cold accumulation periods were analyzed by RT-PCR.The contents of IAA,ABA and ZT in the same period were determined by PLC-MS-MS,in order to understand the expression characteristics of DAM genes and the regulation mechanism of hormones during the dormancy of different chilling peaches.The results showed that the expression trend of DAM genes was consistent in the dormancy of different chilling peaches.With the deepening of dormancy,the expression level of DAM genes in ‘Chunmei’ increased first and then decreased;the expression level of DAM genes in ‘Nanshan Tiantao’ and ‘Ruiguang No.51’ decreased sharply,which was negatively correlated with the accumulation of low temperature.The expression level of DAM genes in ‘Chunmei’ was significantly higher than that in ‘Nanshan Tiantao’ and ‘Ruiguang No.51’,and the expression level began to be down-regulated about one month later than the ‘Ruiguang No.51’ and ‘Nanshan Tiantao’,but ‘Ruiguang No.51’ and ‘Nanshan Tiantao’ had the same down-regulation time.The content of IAA and ZT was no significant difference during the dormancy of different chilling peaches,but the content of ABA was significant difference,which may play an important role in the process of dormancy release.

References:

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Last Update: 2022-04-09