干旱区生态环境知识资源中心(Arid): Growth Promotion of Salicornia bigelovii by Micromonospora chalcea UAE1, an Endophytic 1-Aminocyclopropane-1-Carboxylic Acid Deaminase-Producing Actinobacterial Isolate

Arid

DOI	10.3389/fmicb.2019.01694
	Growth Promotion of Salicornia bigelovii by Micromonospora chalcea UAE1, an Endophytic 1-Aminocyclopropane-1-Carboxylic Acid Deaminase-Producing Actinobacterial Isolate
	El-Tarabily, Khaled A.1,2; AlKhajeh, Abdulmajeed S.1; Ayyash, Mutamed M.3; Alnuaimi, Latifa H.1; Sham, Arjun 1; ElBaghdady, Khaled Z.4; Tariq, Saeed 5; AbuQamar, Synan F.1
通讯作者	El-Tarabily, Khaled A. ; AbuQamar, Synan F.
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2019
卷号	10
英文摘要	Salicornia bigelovii is a promising halophytic crop for saline soils in semi-arid regions. This study was designed to characterize isolates of endophytic actinobacteria from S. bigelovii roots and evaluate the effects associated with plant growth promotion. Twenty-eight endophytic isolates obtained from surface-sterilized roots of S. bigelovii were initially selected based on their production of 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase in vitro in a chemically defined medium. Application of Micromonospora chalcea UAE1, possessing the highest ACC deaminase activity, to S. bigelovii seedlings significantly enhanced the plant growth under gnotobiotic and greenhouse conditions. This was clear from the increases in the dry weight and length of both shoot and root, and seed yield compared to the non-ACC deaminase-producing isolate Streptomyces violaceorectus, or control treatment. The growth promotion was also supported by significant increases in the content of photosynthetic pigments and the levels of auxins, but significant decreases in the levels of ACC in planta. Under greenhouse conditions, M. chalcea recovered from inside the inoculated roots in all samplings (up to 12 weeks post inoculation), suggesting that the roots of healthy S. bigelovii are a suitable habitat for the endophytic actinobacterial isolates. Pure cultures of M. chalcea were not capable of producing auxins, gibberellic acid, cytokinins or polyamines in vitro. This indicates that the growth promotion is most likely to be due to the reduction of the endogenous levels of the stress hormone ethylene. Our findings suggest that growth and yields of S. bigelovii can be enhanced by the field application of the endophyte M. chalcea UAE1. This study is the first to report potential endophytic non-streptomycete actinobacteria to promote the growth of halophytic plants in semi-arid zones under greenhouse conditions.
英文关键词	ACC deaminase halophyte endophytic actinobacteria plant growth promotion Salicornia bigelovii
类型	Article
语种	英语
国家	U Arab Emirates ; Australia ; Egypt
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000476969000001
WOS关键词	PLANT-GROWTH ; BACTERIAL ENDOPHYTES ; ACC DEAMINASE ; KLEBSIELLA-PNEUMONIAE ; OILSEED HALOPHYTE ; SEEDLING GROWTH ; RHIZOBACTERIA ; INOCULATION ; RHIZOSPHERE ; STRAINS
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215802
作者单位	1.United Arab Emirates Univ, Coll Sci, Dept Biol, Al Ain, U Arab Emirates; 2.Murdoch Univ, Sch Vet & Life Sci, Murdoch, WA, Australia; 3.United Arab Emirates Univ, Coll Food & Agr, Dept Food Nutr & Hlth, Al Ain, U Arab Emirates; 4.Ain Shams Univ, Fac Sci, Dept Microbiol, Cairo, Egypt; 5.United Arab Emirates Univ, Dept Anat, Coll Med & Hlth Sci, Al Ain, U Arab Emirates
推荐引用方式 GB/T 7714	El-Tarabily, Khaled A.,AlKhajeh, Abdulmajeed S.,Ayyash, Mutamed M.,et al. Growth Promotion of Salicornia bigelovii by Micromonospora chalcea UAE1, an Endophytic 1-Aminocyclopropane-1-Carboxylic Acid Deaminase-Producing Actinobacterial Isolate[J],2019,10.
APA	El-Tarabily, Khaled A..,AlKhajeh, Abdulmajeed S..,Ayyash, Mutamed M..,Alnuaimi, Latifa H..,Sham, Arjun.,...&AbuQamar, Synan F..(2019).Growth Promotion of Salicornia bigelovii by Micromonospora chalcea UAE1, an Endophytic 1-Aminocyclopropane-1-Carboxylic Acid Deaminase-Producing Actinobacterial Isolate.FRONTIERS IN MICROBIOLOGY,10.
MLA	El-Tarabily, Khaled A.,et al."Growth Promotion of Salicornia bigelovii by Micromonospora chalcea UAE1, an Endophytic 1-Aminocyclopropane-1-Carboxylic Acid Deaminase-Producing Actinobacterial Isolate".FRONTIERS IN MICROBIOLOGY 10(2019).