Metagenomics of Beneficial Microbes in Abiotic Stress Tolerance of Date Palm

Masmoudi, Khaled; Aziz, Mughair Abdul; Shamim, Azra; Sabeem, Miloofer; Hazzouri, Khaled M.; Amiri, Khaled M. A.

doi:10.1007/978-3-030-73750-4_10

Cited by 6 publications

(1 citation statement)

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“…Bacteria form complex co-associations with other microbes as well as host plant, which play a pivotal role in alleviating salinity stress as well as promoting the growth of host plant 9 , 10 . Root-associated bacteria (i.e.…”

Section: Introductionmentioning

confidence: 99%

Salinity of irrigation water selects distinct bacterial communities associated with date palm (Phoenix dactylifera L.) root

Shamim

Loganathachetti

Chandran

et al. 2022

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Saline water irrigation has been used in date palm (Phoenix dactylifera L.) agriculture as an alternative to non-saline water due to water scarcity in hyper-arid environments. However, the knowledge pertaining to saline water irrigation impact on the root-associated bacterial communities of arid agroecosystems is scarce. In this study, we investigated the effect of irrigation sources (non-saline freshwater vs saline groundwater) on date palm root-associated bacterial communities using 16S rDNA metabarcoding. The bacterial richness, Shannon diversity and evenness didn’t differ significantly between the irrigation sources. Soil electrical conductivity (EC) and irrigation water pH were negatively related to Shannon diversity and evenness respectively, while soil organic matter displayed a positive correlation with Shannon diversity. 40.5% of total Operational Taxonomic Units were unique to non-saline freshwater irrigation, while 26% were unique to saline groundwater irrigation. The multivariate analyses displayed strong structuring of bacterial communities according to irrigation sources, and both soil EC and irrigation water pH were the major factors affecting bacterial communities. The genera Bacillus, Micromonospora and Mycobacterium were dominated while saline water irrigation whereas contrasting pattern was observed for Rhizobium, Streptomyces and Acidibacter. Taken together, we suggest that date-palm roots select specific bacterial taxa under saline groundwater irrigation, which possibly help in alleviating salinity stress and promote growth of the host plant.

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Section: Introductionmentioning

confidence: 99%