The Fungus Aspergillus aculeatus Enhances Salt-Stress Tolerance, Metabolite Accumulation, and Improves Forage Quality in Perennial Ryegrass

doi:10.3389/fmicb.2017.01664

CORC > 武汉植物园 > 中国科学院武汉植物园

	The Fungus Aspergillus aculeatus Enhances Salt-Stress Tolerance, Metabolite Accumulation, and Improves Forage Quality in Perennial Ryegrass
	Li, Xiaoning 1,2; Han, Shijuan 1,2; Wang, Guangyang 1,2; Liu, Xiaoying 1,2; Amombo, Erick 1,2; Xie, Yan 1; Fu, Jinmin 1,3
刊名	FRONTIERS IN MICROBIOLOGY
	2017-09-04
卷号	8 页码:13
关键词	perennial ryegrass salt stress Aspergillus aculeatus physiological markers forage quality metabolites
ISSN号	1664-302X
DOI	10.3389/fmicb.2017.01664
英文摘要	Perennial ryegrass (Lolium perenne) is an important forage grass with high yield and superior quality in temperate regions which is widely used in parks, sport field, and other places. However, perennial ryegrass is moderately tolerant to salinity stress compared to other commercial cultivars and salt stress reduces their growth and productivity. Aspergillus aculeatus has been documented to participate in alleviating damage induced by salinity. Therefore, the objective of this study was to investigate the mechanisms underlying A. aculeatus-mediated salt tolerance, and forage quality of perennial ryegrass exposed to 0, 200, and 400 mM NaCl concentrations. Physiological markers and forage quality of perennial ryegrass to salt stress were evaluated based on the growth rate, photosynthesis, antioxidant enzymes activity, lipid peroxidation, ionic homeostasis, the nutritional value of forage, and metabolites. Plants inoculated with A. aculeatus exhibited higher relative growth rate (RGR), turf and forage quality under salt stress than un-inoculated plants. Moreover, in inoculated plants, the fungus remarkably improved plant photosynthetic efficiency, reduced the antioxidant enzymes activity (POD and CAT), and attenuated lipid peroxidation (decreased H2O2 and MDA accumulation) induced by salinity, compared to un-inoculated plants. Furthermore, the fungus also acts as an important role in maintaining the lower Na/K ratio and metabolites and lower the amino acids (Alanine, Proline, GABA, and Asparagine), and soluble sugars (Glucose and Fructose) for inoculated plants than un-inoculated ones. Our results suggest that A. aculeatus may be involved in modulating perennial ryegrass tolerance to salinity in various ways.
资助项目	National Natural Science Foundation of China[31772662] ; National Natural Science Foundation of China[31470363] ; STS subject entitled "utilization of plant resources and industrial development of forage grass in coastal saline soil", Chinese Academy of Science
WOS研究方向	Microbiology
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000409344700001
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1310]
专题	中国科学院武汉植物园
通讯作者	Xie, Yan; Fu, Jinmin
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Ludong Univ, Sch Resources & Environm Engn, Yantai, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaoning,Han, Shijuan,Wang, Guangyang,et al. The Fungus Aspergillus aculeatus Enhances Salt-Stress Tolerance, Metabolite Accumulation, and Improves Forage Quality in Perennial Ryegrass[J]. FRONTIERS IN MICROBIOLOGY,2017,8:13.
APA	Li, Xiaoning.,Han, Shijuan.,Wang, Guangyang.,Liu, Xiaoying.,Amombo, Erick.,...&Fu, Jinmin.(2017).The Fungus Aspergillus aculeatus Enhances Salt-Stress Tolerance, Metabolite Accumulation, and Improves Forage Quality in Perennial Ryegrass.FRONTIERS IN MICROBIOLOGY,8,13.
MLA	Li, Xiaoning,et al."The Fungus Aspergillus aculeatus Enhances Salt-Stress Tolerance, Metabolite Accumulation, and Improves Forage Quality in Perennial Ryegrass".FRONTIERS IN MICROBIOLOGY 8(2017):13.