Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/plants11040484 |
Endophytic Bacteria Colonizing the Petiole of the Desert Plant Zygophyllum dumosum Boiss: Possible Role in Mitigating Stress | |
Srinivasan, Jansirani; Khadka, Janardan; Novoplansky, Nurit; Gillor, Osnat; Grafi, Gideon | |
通讯作者 | Grafi, G (corresponding author),Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, French Associates Inst Agr & Biotechnol Drylands, IL-84990 Ben Gurion, Israel. |
来源期刊 | PLANTS-BASEL
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EISSN | 2223-7747 |
出版年 | 2022 |
卷号 | 11期号:4 |
英文摘要 | Zygophyllum dumosum is a dominant shrub in the Negev Desert whose survival is accomplished by multiple mechanisms including abscission of leaflets to reduce whole plant transpiration while leaving the fleshy, wax-covered petioles alive but dormant during the dry season. Petioles that can survive for two full growing seasons maintain cell component integrity and resume metabolic activity at the beginning of the winter. This remarkable survival prompted us to investigate endophytic bacteria colonizing the internal tissues of the petiole and assess their role in stress tolerance. Twenty-one distinct endophytes were isolated by culturing from surface-sterile petioles and identified by sequencing of the 16S rDNA. Sequence alignments and the phylogenetic tree clustered the isolated endophytes into two phyla, Firmicutes and Actinobacteria. Most isolated endophytes displayed a relatively slow growth on nutrient agar, which was accelerated by adding petiole extracts. Metabolic analysis of selected endophytes showed several common metabolites whose level is affected by petiole extract in a species-dependent manner including phosphoric acid, pyroglutamic acid, and glutamic acid. Other metabolites appear to be endophyte-specific metabolites, such as proline and trehalose, which were implicated in stress tolerance. These results demonstrate the existence of multiple endophytic bacteria colonizing Z. dumosum petioles with the potential role in maintaining cell integrity and functionality via synthesis of multiple beneficial metabolites that mitigate stress and contribute to stress tolerance. |
英文关键词 | desert plants phyllosphere endophytic bacteria Zygophyllum dumosum Actinobacteria Firmicutes 16S rRNA genes endophyte metabolites stress-related metabolites |
类型 | Article |
语种 | 英语 |
开放获取类型 | gold |
收录类别 | SCI-E |
WOS记录号 | WOS:000764642200001 |
WOS关键词 | HALOPHYTE SALICORNIA-EUROPAEA ; SP NOV. ; PSYCHROPHILIC BACTERIUM ; EMENDED DESCRIPTION ; NEGEV DESERT ; GEN. NOV. ; SOIL ; RHIZOSPHERE ; METABOLISM ; TREHALOSE |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/376357 |
作者单位 | [Srinivasan, Jansirani; Khadka, Janardan; Novoplansky, Nurit; Grafi, Gideon] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, French Associates Inst Agr & Biotechnol Drylands, IL-84990 Ben Gurion, Israel; [Srinivasan, Jansirani; Gillor, Osnat] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Zuckerberg Inst Water Res, IL-84990 Ben Gurion, Israel |
推荐引用方式 GB/T 7714 | Srinivasan, Jansirani,Khadka, Janardan,Novoplansky, Nurit,et al. Endophytic Bacteria Colonizing the Petiole of the Desert Plant Zygophyllum dumosum Boiss: Possible Role in Mitigating Stress[J],2022,11(4). |
APA | Srinivasan, Jansirani,Khadka, Janardan,Novoplansky, Nurit,Gillor, Osnat,&Grafi, Gideon.(2022).Endophytic Bacteria Colonizing the Petiole of the Desert Plant Zygophyllum dumosum Boiss: Possible Role in Mitigating Stress.PLANTS-BASEL,11(4). |
MLA | Srinivasan, Jansirani,et al."Endophytic Bacteria Colonizing the Petiole of the Desert Plant Zygophyllum dumosum Boiss: Possible Role in Mitigating Stress".PLANTS-BASEL 11.4(2022). |
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