干旱区生态环境知识资源中心(Arid): A Consortium of Rhizosphere-Competent Actinobacteria Exhibiting Multiple Plant Growth-Promoting Traits Improves the Growth of Avicennia marina in the United Arab Emirates

Arid

DOI	10.3389/fmars.2021.715123
	A Consortium of Rhizosphere-Competent Actinobacteria Exhibiting Multiple Plant Growth-Promoting Traits Improves the Growth of Avicennia marina in the United Arab Emirates
	El-Tarabily, Khaled A. A.; Sham, Arjun; Elbadawi, Alaa A. A.; Hassan, Amira H. H.; Alhosani, Bashaer K. K.; El-Esawi, Mohamed A. A.; AlKhajeh, Abdulmajeed S. S.; AbuQamar, Synan F. F.
通讯作者	El-Tarabily, KAA ; AbuQamar, SFF (corresponding author), United Arab Emirates Univ, Coll Sci, Dept Biol, Al Ain, U Arab Emirates. ; El-Tarabily, KAA (corresponding author), Murdoch Univ, Harry Butler Inst, Murdoch, WA, Australia.
来源期刊	FRONTIERS IN MARINE SCIENCE
EISSN	2296-7745
出版年	2021
卷号	8
英文摘要	Gray mangrove (Avicennia marina) is the dominant vegetation distributed along the coast of the United Arab Emirates (UAE). Despite its performance as natural coastal guardians, very little is known about the reforestation projects to increase mangrove cover over the years in the UAE and in the Arabian Gulf. Plant growth-promoting actinobacteria (PGPA) were isolated from the mangrove rhizosphere sediments found in the UAE and were evaluated for their potential to produce plant growth regulators (PGRs) and to enhance mangrove growth under seawater irrigation conditions. In vitro screening identified nine rhizosphere-competent actinobacterial isolates, in a naturally competitive environment, of which Streptomyces coelicoflavus (Sc) showed a high phosphorus solubilizing activity. Moreover, Streptomyces polychromogenes (Sp), Streptomyces bacillaris (Sb), and Streptomyces ferrugineus (Sf) produced auxins, polyamines (PAs), and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, respectively. Although sediment inoculation with single isolates significantly improved the dry biomass of mangrove shoots (43.2-74.0%) and roots (40.8-75.9%), the consortium of isolates (Sc/Sp/Sb/Sf) caused a greater increase in the dry weight of shoots (82.1%) and roots (81.6%) compared with seawater-irrigated plants (control). In our greenhouse experiments, the levels of photosynthetic pigments, in planta auxins, and PAs significantly increased in plant tissues inoculated with Sc/Sp/Sb/Sf; whereas ACC contents were reduced. This was also evident as the maximum velocity of rubisco carboxylation (Vc(max)) increased four-fold in plants treated with the mixture of isolates over control. To the best of our knowledge, this is the first study reporting culturable halotolerant, rhizosphere-competent PGPA inhabiting salty and arid ecosystems applied individually or in combination to promote mangrove growth under harsh conditions such as those found in the Arabian coastal areas.
英文关键词	actinobacteria Arabian Gulf consortium halophyte mangrove marine agriculture plant growth promotion
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000699762300001
WOS关键词	1-AMINOCYCLOPROPANE-1-CARBOXYLIC ACID ; AZOSPIRILLUM-BRASILENSE ; LIQUID-CHROMATOGRAPHY ; NITROGEN-FIXATION ; ACC DEAMINASE ; GAS-EXCHANGE ; MANGROVE ; BACTERIA ; COLONIZATION ; PERFORMANCE
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363318
作者单位	[El-Tarabily, Khaled A. A.; Sham, Arjun; Elbadawi, Alaa A. A.; Hassan, Amira H. H.; Alhosani, Bashaer K. K.; AbuQamar, Synan F. F.] United Arab Emirates Univ, Coll Sci, Dept Biol, Al Ain, U Arab Emirates; [El-Tarabily, Khaled A. A.] Murdoch Univ, Harry Butler Inst, Murdoch, WA, Australia; [El-Esawi, Mohamed A. A.] Tanta Univ, Fac Sci, Bot Dept, Tanta, Egypt; [AlKhajeh, Abdulmajeed S. S.] Dubai Hlth Author, Dept Med Educ & Res, Dubai, U Arab Emirates
推荐引用方式 GB/T 7714	El-Tarabily, Khaled A. A.,Sham, Arjun,Elbadawi, Alaa A. A.,et al. A Consortium of Rhizosphere-Competent Actinobacteria Exhibiting Multiple Plant Growth-Promoting Traits Improves the Growth of Avicennia marina in the United Arab Emirates[J],2021,8.
APA	El-Tarabily, Khaled A. A..,Sham, Arjun.,Elbadawi, Alaa A. A..,Hassan, Amira H. H..,Alhosani, Bashaer K. K..,...&AbuQamar, Synan F. F..(2021).A Consortium of Rhizosphere-Competent Actinobacteria Exhibiting Multiple Plant Growth-Promoting Traits Improves the Growth of Avicennia marina in the United Arab Emirates.FRONTIERS IN MARINE SCIENCE,8.
MLA	El-Tarabily, Khaled A. A.,et al."A Consortium of Rhizosphere-Competent Actinobacteria Exhibiting Multiple Plant Growth-Promoting Traits Improves the Growth of Avicennia marina in the United Arab Emirates".FRONTIERS IN MARINE SCIENCE 8(2021).