Nitrogen Uptake and Distribution in Different Chinese Cabbage Genotypes under Low Nitrogen Stress
文献类型： 外文期刊
作者： Zhang, Yihui 1 ; Li, Jingjuan 1 ; Zhou, Dandan 1 ; Song, Jie 1 ; Gao, Jianwei 1 ;
作者机构： 1.Shandong Normal Univ, Coll Life Sci, Shandong Prov Key Lab Plant Stress, Jinan 250100, Peoples R China
2.Shandong Acad Agr Sci, Inst Vegetables & Flowers, Shandong Branch Natl Vegetable Improvement Ctr, Jinan 250100, Peoples R China
关键词： Chinese cabbage; gene expression; nitrogen stress; RNA sequencing
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.924； 五年影响因子：6.132 ）
ISSN：
年卷期： 2022 年 23 卷 3 期
页码：
收录情况： SCI
摘要： In order to understand the effects of low nitrogen (LN) stress on the growth and development in different genotypes of Chinese cabbage, the L40 genotype with high nitrogen utilization and the L14 genotype with LN utilization were selected as experimental materials. Field experiments and indoor hydroponic methods were used to study the different responses of two Chinese cabbage genotypes to low nitrogen levels. In this study, we also analyzed the genome-wide gene expression profiles of L40 and L14 in response to LN stress by high-throughput RNA sequencing technology. The results reveal that the L40 root system responds better to LN compared with L14. After LN stress, L40 can effectively absorb and transport NO3- and store it in the ground. It is precisely because of this characteristic of the L40 genotype that LN treatment did not have a significant effect on the chlorophyll (Chl) content and net photosynthetic rate (Pn) of the L40 Chinese cabbage compared with the L14 Chinese cabbage. These two different Chinese cabbage genotypes were shown to have differently expressed genes related to nitrate transport, auxin synthesis, and glutamate dehydrogenase synthesis. These genes function in the nitrogen pathway, which are important candidates for understanding the molecular host-response mechanisms to LN stress.
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