Boron-Efficient Sugar Beet (Beta vulgaris L.) Cultivar Improves Tolerance to Boron Deficiency by Improving Leaf Traits
文献类型： 外文期刊
作者： Song, Xin 1 ; Song, Baiquan 1 ; Huo, Jialu 1 ; Riaz, Muhammad 3 ; Wang, Xiangling 1 ; Huang, Wengong 4 ; Zhao, Shaopeng 3 ;
作者机构： 1.Heilongjiang Univ, Engn Res Ctr Agr Microbiol Technol, Minist Educ, Harbin 150500, Peoples R China
2.Heilongjiang Univ, Sch Life Sci, Heilongjiang Prov Key Lab Ecol Restorat & Resourc, Harbin 150080, Peoples R China
3.Zhongkai Univ Agr & Engn, Coll Resources & Environm, Guangzhou 510225, Peoples R China
4.Heilongjiang Acad Agr Sci, Safety & Qual Inst Agr Prod, Harbin 150086, Peoples R China
关键词： Boron deficiency; Cell wall; Pectin; KDOPS; Microstructure
期刊名称：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：3.61； 五年影响因子：3.581 ）
ISSN： 0718-9508
年卷期：
页码：
收录情况： SCI
摘要： Crop nutrient-efficient cultivars are more adapted to the nutrient-deficient environment. However, the physiological tolerance mechanisms of boron (B)-efficient sugar beet cultivars in response to B deficiency are unclear. Therefore, the B-efficient and B-inefficient sugar beet cultivars were used as test materials and cultured at two B levels (B deficiency and normal) to investigate the changes in the sugar beet leaf morphology, cell wall composition, and related gene expression under B-deficient conditions. The results indicated that B deficiency distorted the cell wall structure, altered cell wall components, and adversely affected leaf morphology. However, compared with the B-inefficient cultivar, the B-efficient sugar beet cultivar allocated more B concentration in the cell wall under B-deficient conditions. In B-efficient sugar beet cultivar leaves, the chelator-soluble pectin contents were remarkably increased while the alkali-soluble pectin content decreased, and the KDOPS expression was less upregulated. The B-efficient sugar beet cultivar accumulated more leaf biomass, a larger leaf area, and was less affected by B deprivation. In conclusion, the B-efficient cultivar responded efficiently in cell wall composition, gene expression, and leaf morphology, thus demonstrating better resistance to B-deficient stress.
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