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Transcriptome analysis reveals the molecular mechanism of boron deficiency tolerance in leaves of boron-efficient Beta vulgaris seedlings

文献类型： 外文期刊

作者： Song, Xin 1 ; Wang, Xiangling 1 ; Song, Baiquan 1 ; Wu, Zhenzhen 2 ; Zhao, Xiaoyu 2 ; Huang, Wengong 3 ; Riaz, Muhamma 1 ;

作者机构： 1.Heilongjiang Univ, Coll Life Sci, Heilongjiang Prov Key Lab Ecol Restorat & Resourc, Harbin 150080, Peoples R China

2.Heilongjiang Univ, Coll Adv Agr & Ecol Environm, Natl Sugar Crops Improvement Ctr, Harbin 150080, Peoples R China

3.Heilongjiang Acad Agr Sci, Safety & Qual Inst Agr Prod, Harbin 150086, Peoples R China

4.South China Agr Univ, Coll Nat Resources & Environm, Root Biol Ctr, State Key Lab Conservat & Utilizat Subtrop Agro B, Guangzhou 510642, Guangdong, Peoples R China

关键词： Boron; Sugar beet; Deficiency; Antioxidant system

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN： 0981-9428

年卷期： 2021 年 168 卷

页码：

收录情况： SCI

摘要： Sugar beet (Beta vulgaris L.) has a high demand for B, and B deficiency inhibits normal growth and productivity. However, there is a lack of information on how B deficiency affects the growth of beet at the transcriptome level, and the factors that govern B utilisation efficiency. This study aimed to identify the genes differentially expressed under B deficiency and those that underlie the mechanisms of efficient B use in two sugar beet cultivars. Accordingly, B-efficient (H, KWS1197) and B-inefficient (L, KWS0143) sugar beet cultivars were used, and two levels of boron were employed in the hydroponic experiments: B0.1 (0.1 mu M B, deficiency) and B50 (50 mu M B, CK). The results showed that B deficiency inhibited leaf growth, significantly reduced B concentration and B transfer coefficient, and increased peroxidase (POD) activity and malondialdehyde and proline content. The transcriptome data showed that the B-efficient variety exhibited more differentially expressed genes than the B-inefficient variety. Metabolic pathways were the most critical pathways involved in the B deficiency response. The expression of POD, bHLH, WRKY transcription factors, and nodulin26-like intrinsic protein (NIP5;1) were upregulated in the KWS1197 variety. In conclusion, the KWS1197 variety had physiological advantages and a highly efficient B utilisation molecular mechanism, contributing to a high B deficiency tolerance. This study provides a theoretical basis for the adaptation mechanism to B deficiency in sugar beets.

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