Effects of NaCl on Root Growth and Cell Wall Composition of Two Soya bean Cultivars with Contrasting Salt Tolerance

doi:10.1111/jac.12060

	Effects of NaCl on Root Growth and Cell Wall Composition of Two Soya bean Cultivars with Contrasting Salt Tolerance
	An, P.; Li, X.; Zheng, Y.; Matsuura, A.; Abe, J.; Eneji, A. E.; Tanimoto, E.; Inanaga, S.
	2014
发表期刊	JOURNAL OF AGRONOMY AND CROP SCIENCE
ISSN	0931-2250
卷号	200 期号:3 页码:212-218
摘要	Our objectives were to determine the influence of salinity on root cell wall composition in soya beans and the possible mechanism of salt tolerance. Two soya bean cultivars, Touzan 69 (salt sensitive) and Dare (salt tolerant), were selected as experimental material for comparison. Root growth was clearly inhibited by salinity in both cultivars, but Touzan 69 showed more severe reductions in root length than Dare. In the 0-5mm root segment (from root tip), the total cell wall sugar content of Touzan 69 decreased considerably due to salinity as were the pectin, hemicellulose and cellulose fractions. In Dare, NaCl treatments only caused a slight decrease in the pectin fraction and no marked change in hemicellulose and cellulose fractions. Without salt treatment, the pectin fraction accounted for about 40% and cellulose for 30% of cell wall composition in the 0-5mm root segment; in the 5-10 segment (from root tip), pectin and cellulose accounted for 27% and 45% in Touzan 69, and 34% and 38% in Dare. The percentage of pectin decreased and that of cellulose increased in the 5-10mm root segment compared with the 0-5mm segment. This indicates that pectin largely regulates cell growth, as the 0-5mm region is considered the elongation zone of soya bean roots. Salt treatment decreased the percentage of pectin, but increased that of cellulose across root zones of the two cultivars, suggesting that salt presence may increase cell wall rigidity, and thus, inhibits root growth. Dare was able to maintain its main root cell wall substances, an apparent advantage for root cell growth that may overall improve its salt tolerance. Also, the less reduction in cell wall uronic acid was of some benefit in the positive regulation of root cell growth in Dare. The changes in cell wall composition, especially the pectin content had a close relation with the regulation of root growth. The difference in salt tolerance between the two tested cultivars can partly be explained on the basis of these changes in response to salinity. Sugar compounds in each cell wall constituent and their functions in ion transport as well as the relationship between root cell wall and soya bean salt tolerance need to be further investigated.
关键词	cell wall salinity stress soybean root growth
学科领域	Agronomy
DOI	10.1111/jac.12060
收录类别	SCI
语种	英语
WOS关键词	WATER-STRESS ; SOYBEAN CULTIVARS ; DROUGHT TOLERANCE ; HORDEUM-VULGARE ; POLYSACCHARIDES ; SALINITY ; PECTIN ; BIOSYNTHESIS ; ARABIDOPSIS ; SENSITIVITY
WOS研究方向	Agriculture
WOS记录号	WOS:000334305900006
出版者	WILEY-BLACKWELL
文献子类	Article
出版地	HOBOKEN
EISSN	1439-037X
作者邮箱	aeeneji@yahoo.co.uk
引用统计	被引频次：36[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27121
专题	植被与环境变化国家重点实验室
作者单位	1.[An, P.] Tottori Univ Hamasaka, Arid Land Res Ctr, Tottori, Japan 2.[Li, X.] Hebei Acad Forestry Sci Shijiazhuang, Shijiazhuang, Peoples R China 3.[Zheng, Y.] Chinese Acad Sci Beijing, Inst Bot, Lab Quantitat Vegetat Ecol, Beijing, Peoples R China 4.[Matsuura, A.] Tokai Univ Aso, Sch Agr, Kumamoto, Japan 5.[Abe, J.] Univ Tokyo, Fac Agr, Bunkyo Ku, Tokyo 113, Japan 6.[Eneji, A. E.] Univ Calabar, Dept Soil Sci, Fac Agr Forestry & Wildlife Resources Management, Calabar, Nigeria 7.[Tanimoto, E.] Nagoya City Univ, Midori Ku, Nagoya, Aichi, Japan 8.[Inanaga, S.] Inst Technologists Gyouda, Saitama, Japan
推荐引用方式 GB/T 7714	An, P.,Li, X.,Zheng, Y.,et al. Effects of NaCl on Root Growth and Cell Wall Composition of Two Soya bean Cultivars with Contrasting Salt Tolerance[J]. JOURNAL OF AGRONOMY AND CROP SCIENCE,2014,200(3):212-218.
APA	An, P..,Li, X..,Zheng, Y..,Matsuura, A..,Abe, J..,...&Inanaga, S..(2014).Effects of NaCl on Root Growth and Cell Wall Composition of Two Soya bean Cultivars with Contrasting Salt Tolerance.JOURNAL OF AGRONOMY AND CROP SCIENCE,200(3),212-218.
MLA	An, P.,et al."Effects of NaCl on Root Growth and Cell Wall Composition of Two Soya bean Cultivars with Contrasting Salt Tolerance".JOURNAL OF AGRONOMY AND CROP SCIENCE 200.3(2014):212-218.

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