干旱区生态环境知识资源中心(Arid): Symbiotic interactions between a newly identified native mycorrhizal fungi complex and the endemic tree Argania spinosa mediate growth, photosynthesis, and enzymatic responses under drought stress conditions

Arid

DOI	10.1139/cjfr-2020-0351
	Symbiotic interactions between a newly identified native mycorrhizal fungi complex and the endemic tree Argania spinosa mediate growth, photosynthesis, and enzymatic responses under drought stress conditions
	Outamamat, Elmostapha; El Mrabet, Said; Dounas, Hanane; Bargaz, Adnane; Duponnois, Robin; Ouahmane, Lahcen
通讯作者	Ouahmane, L
来源期刊	CANADIAN JOURNAL OF FOREST RESEARCH
ISSN	0045-5067
EISSN	1208-6037
出版年	2022
卷号	52 期号:1
英文摘要	Water deficit or drought is the most important abiotic stress limiting plant growth performance and plant community development; this is typical in the Mediterranean area where plants are often severely and permanently water limited. Such is the case of the argan tree (Argania spinosa (L.) Skeels), one of the tree species most affected by desertification and global warming. To advance knowledge on how this tree can withstand drought stress, inoculation with a native complex of arbuscular mycorrhizal fungi (AMF), composed mainly of the genus Glomus, was studied in connection with a set of growth and physiological parameters. Under controlled conditions, inoculated and non-inoculated argan seedlings were grown for 3 months under three water regimens: 25%, 50%, and 75% relative to the field capacity of used soil substrate. The results showed that the argan tree had different growth abilities to develop and withstand the various applied water limitations. The AMP complex stimulated the growth and mineral nutrition of argan seedlings under the different imposed levels of water deficiency. Relative water content (RWC) in leaves, water potential, and stomatal conductance in argan leaves showed a general improvement in inoculated seedlings compared to non-inoculated ones. Soluble sugar and proline contents significantly increased in non-inoculated seedlings compared with inoculated seedlings under water-limiting conditions (25%). Similarly, oxidative enzyme (catalase, peroxidase, superoxide dismutase) activity increased significantly in drought-stressed seedlings. Non-inoculated seedlings showed the highest accumulation of these enzymes. Moreover, mycorrhizal symbiosis establishment positively correlated with argan tree seedlings in terms of growth, mineral nutrition, soluble sugar and proline contents, and enzymes activities. The main results from the current study suggest that AMF improve the ability of A. spinosa to tolerate drought by enhancing mineral nutrition and the transport of high levels of water by enhancing the RWC and water potential in leaves. Finally, the alleviation of the destructive effects of reactive oxygen species was modulated by enzymatic scavenging activity. Hence, the use of AMP in the technical process of argan seedlings production is highly recommended in different ecofriendly restoration strategies, with the aim of producing high quality seedlings capable of tolerating drought stress.
英文关键词	mycorrhizae drought plant growth Argania spinosa
类型	Article
语种	英语
开放获取类型	Green Submitted, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000767202700001
WOS关键词	CUPRESSUS-ATLANTICA GAUSSEN ; TRITICUM-AESTIVUM L. ; WATER-DEFICIT ; OXIDATIVE STRESS ; OSMOTIC-STRESS ; NADPH-OXIDASE ; FREE PROLINE ; PLANTS ; INOCULATION ; TOLERANCE
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392049
推荐引用方式 GB/T 7714	Outamamat, Elmostapha,El Mrabet, Said,Dounas, Hanane,et al. Symbiotic interactions between a newly identified native mycorrhizal fungi complex and the endemic tree Argania spinosa mediate growth, photosynthesis, and enzymatic responses under drought stress conditions[J],2022,52(1).
APA	Outamamat, Elmostapha,El Mrabet, Said,Dounas, Hanane,Bargaz, Adnane,Duponnois, Robin,&Ouahmane, Lahcen.(2022).Symbiotic interactions between a newly identified native mycorrhizal fungi complex and the endemic tree Argania spinosa mediate growth, photosynthesis, and enzymatic responses under drought stress conditions.CANADIAN JOURNAL OF FOREST RESEARCH,52(1).
MLA	Outamamat, Elmostapha,et al."Symbiotic interactions between a newly identified native mycorrhizal fungi complex and the endemic tree Argania spinosa mediate growth, photosynthesis, and enzymatic responses under drought stress conditions".CANADIAN JOURNAL OF FOREST RESEARCH 52.1(2022).