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Roles of Plant Growth-Promoting Rhizobacteria (PGPR) in Stimulating Salinity Stress Defense in Plants: A Review

International journal of molecular sciences, 2021-03, Vol.22 (6), p.3154 [Peer Reviewed Journal]

2021 by the authors. 2021 ;ISSN: 1422-0067 ;ISSN: 1661-6596 ;EISSN: 1422-0067 ;DOI: 10.3390/ijms22063154 ;PMID: 33808829

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  • Title:
    Roles of Plant Growth-Promoting Rhizobacteria (PGPR) in Stimulating Salinity Stress Defense in Plants: A Review
  • Author: Ha-Tran, Dung Minh ; Nguyen, Trinh Thi My ; Hung, Shih-Hsun ; Huang, Eugene ; Huang, Chieh-Chen
  • Subjects: abiotic stress ; ACC deaminase ; Crops, Agricultural ; Genetic Variation ; Genomics - methods ; PGPR ; Photosynthesis ; Plant Development ; Plant Physiological Phenomena ; Proteomics - methods ; Review ; Rhizobiaceae - physiology ; Salinity ; Salt Stress ; Salt Tolerance ; seed priming ; Seedlings - physiology ; Symbiosis
  • Is Part Of: International journal of molecular sciences, 2021-03, Vol.22 (6), p.3154
  • Description: To date, soil salinity becomes a huge obstacle for food production worldwide since salt stress is one of the major factors limiting agricultural productivity. It is estimated that a significant loss of crops (20-50%) would be due to drought and salinity. To embark upon this harsh situation, numerous strategies such as plant breeding, plant genetic engineering, and a large variety of agricultural practices including the applications of plant growth-promoting rhizobacteria (PGPR) and seed biopriming technique have been developed to improve plant defense system against salt stress, resulting in higher crop yields to meet human's increasing food demand in the future. In the present review, we update and discuss the advantageous roles of beneficial PGPR as green bioinoculants in mitigating the burden of high saline conditions on morphological parameters and on physio-biochemical attributes of plant crops via diverse mechanisms. In addition, the applications of PGPR as a useful tool in seed biopriming technique are also updated and discussed since this approach exhibits promising potentials in improving seed vigor, rapid seed germination, and seedling growth uniformity. Furthermore, the controversial findings regarding the fluctuation of antioxidants and osmolytes in PGPR-treated plants are also pointed out and discussed.
  • Publisher: Switzerland: MDPI
  • Language: English
  • Identifier: ISSN: 1422-0067
    ISSN: 1661-6596
    EISSN: 1422-0067
    DOI: 10.3390/ijms22063154
    PMID: 33808829
  • Source: MEDLINE
    PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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