文献类型： 外文期刊
作者： Ma, Chunhui 1 ; Li, Mingtong 1 ; Yang, Shaolan 1 ; Zhang, Xinfu 1 ; Zhang, Yong 1 ; Qi, Qi 1 ; Zhang, Yu 2 ; Cheng, Chenx 1 ;
作者机构： 1.Qingdao Agr Univ, Coll Hort, 700 Changcheng Rd, Qingdao 266109, Shandong, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, 198 Shiqiao Rd, Hangzhou 310021, Zhejiang, Peoples R China
关键词： Pear; Rootstock; Hard-end; NAC; Stress
期刊名称：JOURNAL OF PLANT GROWTH REGULATION （ 影响因子：4.169； 五年影响因子：4.038 ）
ISSN： 0721-7595
年卷期：
页码：
收录情况： SCI
摘要： The hard-end of pear fruit might be a disorder of the environmental abiotic stress, which is mainly caused by the reduced water intake of the fruit resulting from climate drought. To explore the factors that cause fruit hard-end, two rootstocks of Pyrus betulaefolia and P. bretschneideri with different root absorptive capacity of water and nutrients were used as base stock of 'Whangkeumbae' (P. pyrifolia) pear fruit. The results showed that the incidence of hard-end fruit in 'Whangkeumbae' pear trees using rootstock with lower rate of water absorptive increased, indicating that this physiological disorder was related with water deficiency. PpNAC187 was selected from RNA-Seq carried out on the calyx end of with and without the hard-end symptom of different rootstocks. The transgenic tobacco overexpressing PpNAC187 showed higher tolerance with drought and salt stress, which might suggest that PpNAC187 acts an important role during the hard-end occurring caused by drought or salt stress.
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