Salt stress alleviation in citrus plants by plant growth-promoting rhizobacteria Pseudomonas putida and Novosphingobium sp.
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Other documents of the author: Vives, Vicente; Gomez-Cadenas, Aurelio; Perez-Clemente, Rosa Maria
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Title
Salt stress alleviation in citrus plants by plant growth-promoting rhizobacteria Pseudomonas putida and Novosphingobium sp.Date
2018Publisher
SpringerISSN
0721-7714; 1432-203XBibliographic citation
Vives-Peris, V., Gómez-Cadenas, A. & Pérez-Clemente, R.M. Plant Cell Rep (2018) 37: 1557. https://doi.org/10.1007/s00299-018-2328-zType
info:eu-repo/semantics/articlePublisher version
https://link.springer.com/article/10.1007/s00299-018-2328-zVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
Key message This work reveals the protective role of two rhizobacteria, Pseudomonas putida and Novosphingobium
sp., on citrus plants subjected to salt stress conditions.
Abstract Detrimental salt stress effects on ... [+]
Key message This work reveals the protective role of two rhizobacteria, Pseudomonas putida and Novosphingobium
sp., on citrus plants subjected to salt stress conditions.
Abstract Detrimental salt stress effects on crops are likely to increase due to climate change reducing the quality of irrigation water. Plant growth-promoting rhizobacteria (PGPRs) can mitigate stress-induced damage in plants cultivated under
high salinity conditions. In this work, Citrus macrophylla (alemow) plants inoculated with the rhizobacteria Pseudomonas
putida KT2440 or Novosphingobium sp. HR1a were subjected to salt stress for 30 days. Results showed that in absence of salt
stress, Novosphingobium sp. HR1a induced a decrease of transpiration (E) and stomatal conductance (gs). Both rhizobacteria
reduced salt stress-induced damage. Levels of abscisic acid (ABA) and salicylic acid (SA) were lower in inoculated plants
under salt stress conditions. Similarly, under stress conditions maximum efficiency of photosystem II (Fv/Fm) in inoculated
plants decreased to a lower extent than in non-inoculated ones. In stressed plants, Novosphingobium sp. HR1a also induced
leaf accumulation of 3-indole acetic acid (IAA) and a delay in the decrease of quantum yield (ΦPSII). P. putida KT2440
inhibited root chloride and proline accumulation in response to salt stress. Although both bacterial species had beneficial
effects on salt-stressed citrus plants, Novosphingobium sp. HR1a induced a better plant performance. Therefore, both strains
could be candidates to be used as PGPRs in programs of inoculation for citrus protection against salt stress. [-]
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Plant Cell Reports (2018) 37:1557–1569Investigation project
AGL2016- 76574-R and UJI-B2016-23; PREDOC/2013/31Rights
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