Biotechnological interventions for inducing abiotic stress tolerance in crops

Rani, Simran; Kumar, Pradeep; Suneja, Pooja

doi:10.1016/j.plgene.2021.100315

Cited by 21 publications

(18 citation statements)

References 136 publications

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“…The abiotic and biotic stresses affect the overall growth of plants, thereby leading to an increase in the levels of the stress hormone ethylene [27,50]. A large number of rhizospheric and endophytic genera are known to regulate the plant ethylene levels by producing ACC deaminase.…”

Section: Discussionmentioning

confidence: 99%

Exploration of plant growth‐promoting endophytic bacteria from Pisum sativum and Cicer arietinum from South–West Haryana

et al. 2022

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In the present study, nonrhizobial endophytes were isolated from Pisum sativum and Cicer arietinum from Haryana, India. A total of 355 bacterial endophytes were screened for plant growth promoting traits. Out of all, 96 bacterial endophytes were selected based on morphological characters and multi‐PGP traits, and their diversity analyzed by amplified ribosomal DNA restriction analysis. Based on their ARDRA profile, the 25 representative isolates (12 from P. sativum and 13 from C. arietinum), were selected and identified by 16S ribosomal DNA sequencing. Genetic relatedness based on BLAST analysis revealed the similarity of these isolates with members of three prominent phyla, that is, Proteobacteria, Firmicutes, and Actinobacteria. The dominant cluster, Firmicutes, constituted 60% of the isolates, assigned to four different genera, Bacillus, Staphylococcus, Ornithinibacillus, and Lysinibacillus. Phylum α‐proteobacteria included two genera, namely Paenochrobactrum and Ochrobactrum and three genera in phylum γ‐proteobacteria, namely Pseudomonas, Pantoea and Proteus. The phylum Actinobacteria was constituted of two genera, Microbacterium and Arthrobacter. Bacillus zhangzhouensis, Bacillus safensis, Arthrobacter enclensis from P. sativum and Bacillus haynesii, Paenochrobactrum sp. from C. arietinum are documented as plant growth promoting endophytic bacteria for the first time in the present study. The in vitro and in vivo assessment based on bonitur score revealed that the endophytic isolates Bacillus mojavensis PRN2, Pseudomonas chlororaphis PHN9, B. safensis PRER2, Pseudomonas sp. RCP1, Pseudomonas lini PRN1 and B. haynensii RCP3 from P. sativum and C. arietinum significantly enhanced the plant growth parameters. Therefore, these potential isolates can be further harnessed for preparation of bioformulations to enhance sustainable agriculture.

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Section: Discussionmentioning

confidence: 99%

Exploration of plant growth‐promoting endophytic bacteria from Pisum sativum and Cicer arietinum from South–West Haryana

et al. 2022

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“…Plant community throughout the world is suffering in terms of growth, development, and yield as a result of climate change–induced environmental stress manifested in the form of drought, flood, temperature extremes, salinity, heavy metal toxicity combined with biotic stresses caused due to herbivores, pathogens, and so on. Enough studies have reported the significant role played by endophytes in mitigating abiotic and biotic stress ( Rani et al, 2021 ). Different mechanisms have been deciphered revealing the complex regulation involved in the stress tolerance conferred by the endophytes to the host plants.…”

Section: Inducing Climate Change Resilience In Floramentioning

confidence: 99%

Endophytism: A Multidimensional Approach to Plant–Prokaryotic Microbe Interaction

et al. 2022

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Plant growth and development are positively regulated by the endophytic microbiome via both direct and indirect perspectives. Endophytes use phytohormone production to promote plant health along with other added benefits such as nutrient acquisition, nitrogen fixation, and survival under abiotic and biotic stress conditions. The ability of endophytes to penetrate the plant tissues, reside and interact with the host in multiple ways makes them unique. The common assumption that these endophytes interact with plants in a similar manner as the rhizospheric bacteria is a deterring factor to go deeper into their study, and more focus was on symbiotic associations and plant–pathogen reactions. The current focus has shifted on the complexity of relationships between host plants and their endophytic counterparts. It would be gripping to inspect how endophytes influence host gene expression and can be utilized to climb the ladder of “Sustainable agriculture.” Advancements in various molecular techniques have provided an impetus to elucidate the complexity of endophytic microbiome. The present review is focused on canvassing different aspects concerned with the multidimensional interaction of endophytes with plants along with their application.

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“…Drought stress impacts plant growth and productivity, adversely taking a toll on the percentage of seed germination, transpiration rate, net photosynthetic rate, leaf relative water content, reactive oxygen species overproduction, translocation of nutrients, etc. Conventional approaches such as plant breeding, application of substances like glycine betaine and nitric oxide, using plant growth promoting endophytic bacteria, along with seed priming techniques and transgenics, have been employed to induce drought stress tolerance in plants (Ilyas et al, 2021;Rani et al, 2021). A number of studies have illustrated the role of nanoparticles in inducing drought stress tolerance in plants.…”

Section: Mode Of Delivery Of Zinc Oxide Nanoparticlesmentioning

confidence: 99%

Biogenic Synthesis of Zinc Nanoparticles, Their Applications, and Toxicity Prospects

et al. 2022

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Nanofertilizers effectively deliver the micronutrients besides reducing the phytotoxicity and environmental damage associated with chemical fertilizers. Zinc, an essential micronutrient, is significant for chloroplast development, activation of certain enzymes, and primary metabolism. Nano zinc oxide (ZnO) is the most widely used zinc nanoparticle. Concerns regarding the toxicity of conventional physical and chemical methods of synthesizing the nanoparticles have generated the need for a green approach. It involves the biogenic synthesis of metallic nanoparticles using plants and microorganisms. Microbe-mediated biogenic synthesis of metallic nanoparticles is a bottom-up approach in which the functional biomolecules of microbial supernatant reduce the metal ions into its nanoparticles. This review discusses the biological synthesis of nano-ZnO from microorganisms and related aspects such as the mechanism of synthesis, factors affecting the same, methods of application, along with their role in conferring drought stress tolerance to the plants and challenges involved in their large-scale synthesis and applications.

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Biotechnological interventions for inducing abiotic stress tolerance in crops

Cited by 21 publications

References 136 publications

Exploration of plant growth‐promoting endophytic bacteria from Pisum sativum and Cicer arietinum from South–West Haryana

Exploration of plant growth‐promoting endophytic bacteria from Pisum sativum and Cicer arietinum from South–West Haryana

Endophytism: A Multidimensional Approach to Plant–Prokaryotic Microbe Interaction

Biogenic Synthesis of Zinc Nanoparticles, Their Applications, and Toxicity Prospects

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