Transcriptomic and Metabolic Profiling of Kenaf Stems under Salinity Stress

被引:6
作者
An, Xia [1 ]
Chen, Jie [2 ]
Liu, Tingting [1 ]
Li, Wenlue [1 ]
Luo, Xiahong [1 ]
Zou, Lina [1 ]
机构
[1] Zhejiang Acad Agr Sci, Zhejiang Xiaoshan Inst Cotton & Bast Fiber Crops, Zhejiang Inst Landscape Plants & Flowers, Hangzhou 311251, Peoples R China
[2] Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 430070, Peoples R China
来源
PLANTS-BASEL | 2022年 / 11卷 / 11期
基金
中国国家自然科学基金;
关键词
kenaf; salt stress; transcriptome; metabolome; phytohormone; AUXIN BIOSYNTHESIS; RNA-SEQ; QUANTIFICATION; IDENTIFICATION; ARABIDOPSIS; RESPONSES; LIGNIN;
D O I
10.3390/plants11111448
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Kenaf (Hibiscus cannabinus L.) is an indispensable fiber crop that faces increasing salinity stress. In previous studies regarding the molecular mechanisms of how kenaf may respond to salt stress, no metabolic evidences have been reported. Meanwhile, studies regarding kenaf stems under adverse growth conditions have not been conducted. In the present study, multiple-layer evidences including physiological, transcriptomic, and metabolic data regarding how kenaf stems were affected by the salt stress are provided, wherein the stem growth, especially the lignification process, is retarded. Meanwhile, the transcriptomic data indicated genes involved in the photosynthesis are significantly repressed while the multiple flavonoid metabolism genes are enriched. As to the metabolic data, the content variation for the growth-promotion phytohormones such as IAA and the stress-responding ones including ABA are within or without expectations, implying these phytohormones played complicated roles when the kenaf stems encounter salt stress. However, the metabolite variations did not always agree with the expression levels of corresponding key pathway genes, possibly because the metabolite could be biosynthesized or catabolized in multiple pathways. Collectively, our data may enlighten, more specifically, downstream studies on kenaf responses against salinity and other adverse conditions.
引用
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页数:15
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