Morpho-Physiological Traits and Molecular Intricacies Associated with Tolerance to Combined Drought and Pathogen Stress in Plants

Irulappan, Vadivelmurugan; Senthil‐Kumar, Muthappa

doi:10.1007/978-3-319-94746-4_4

Cited by 7 publications

(3 citation statements)

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“…Leaf gas exchange properties (g S , transpiration, and photosynthesis) and photosynthetic pigment content also are associated with the type of plant acclimation responses (Zhu et al, 2016). In addition, MDA and proline production have been used as biochemical markers to characterize plant responses to abiotic and biotic stresses (Dar et al, 2016;Irulappan and Senthil-Kumar, 2018).…”

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confidence: 99%

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Chávez-Arias¹,

Gómez-Caro²,

Restrepo-Díaz³

2020

horts

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Physalis peruviana L. crops are exposed to different stress conditions that limit their productivity. Within these conditions, abiotic stress caused by water and biotic stress by Fusarium oxysporum f. sp. physali (Foph) are frequent at commercial levels. The foliar application of synthetic elicitors can be a tool to mitigate the negative impacts of these stresses. The objective of this study was to evaluate the interaction between Foph inoculation and three foliar applications of brassinosteroids (BR), salicylic acid (SA), and a commercial elicitor based on botanical extracts (BE) of Echinacea purpurea, Potentilla erecta, and Aloe vera on the physiological [stomatal conductance (gS), leaf water potential (Ψwf), chlorophyll fluorescence, and growth] and biochemical [photosynthetic pigments, malondialdehyde (MDA) production, and proline content] responses of cape gooseberry plants subjected to a 6-day waterlogging period. The established treatments were as follows: 1) waterlogged plants without Foph; 2) waterlogged plants with Foph; 3) waterlogged, noninoculated (Foph−) plants treated foliarly with BR, SA, or BE; and 4) waterlogged, inoculated (Foph+) plants treated foliarly with BR, SA, or BE. The results showed that the foliar application of BR or SA reduced vascular wilt development in plants subjected to a hypoxia period. In addition, three applications of BR, SA, or BE favored gS, Ψwf, growth, and chlorophyll fluorescence parameters in cape gooseberry plants under the interaction between Foph and oxygen deficit in the soil. Also, higher photosynthetic pigment and proline contents were observed in plants treated with elicitors under stress combination, whereas a lower MDA production was evidenced in this group of plants. In conclusion, BR, SA, or BE can help mitigate the negative effects of the simultaneous occurrence of Foph and a waterlogging condition for 6 days in cape gooseberry plants.

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confidence: 99%

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Chávez-Arias¹,

Gómez-Caro²,

Restrepo-Díaz³

2020

horts

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“…The changing climatic scenario is supposed to have a surprising effect on agricultural production and farming practices as a result of these stresses. These involve both biotic and abiotic stresses can limit the growth and development of a plant (Irulappan and Senthil-Kumar, 2018). Various biotic stresses include infection by bacterial and fungal pathogens, viruses, insect predation and nematode infection.…”

Section: Role Of Microbes In Stress Control In Plantsmentioning

confidence: 99%

Climate resilient microbes in sustainable crop production

Saini¹,

Sharma²

2019

Contaminants in Agriculture and Environment: Health Risks and Remediation

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Climate change poses a great threat to the sustainability in agricultural crop production. Such circumstances demand the use of improved agricultural practices, environment friendly and climate resilient technologies. Microorganisms, being ubiquitous and abundant in the soil environment, are the key players regulating the earth's biogeochemical systems. The enormous potential of these microbes is being recognized and scientific community around the globe is involved in significant research towards the selection and commercialization of the microbes of biotechnological and environmental relevance. These microbes may be helpful in sustainable crop production by providing protection to plants from harmful pests and pathogens, by enhancing plant growth, by alleviating environmental and nutritional stresses, thus facilitating plants to Chapter contents Introduction …………………………………………………………………………………………………….. Soil microbial communities-effect of climate change and their resilience ………………………………. Need for microbial inoculation ……………………………………………………………………………… Role of soil microbes in plant growth nutrition …………………………………………………………….. Role of fungi …………………………………………………………………………………………………. Role of bacteria .……………………………………………………………………………………………... Role of microbes in stress control in plants …………………………………………………………………. Control of abiotic stress …………………………………………………………………………………….. Control of biotic stress ……………………………………………………………………………………… Conclusion ……………………………………………………………………………………………………… References ………………………………………………………………………………………………………. 265 cope up with the different abiotic and biotic stress conditions in view of the changing climatic scenario and alleviating its dire consequences.

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“…Also, proline content has been correlated with plant defense against diseases [46]. In addition, malondialdehyde (MDA) production has also been used as a biochemical parameter to characterize plant responses to pathogens attack [44].…”

Section: Introductionmentioning

confidence: 99%

Physiological Responses to the Foliar Application of Synthetic Resistance Elicitors in Cape Gooseberry Seedlings Infected with Fusarium oxysporum f. sp. physali

Chávez-Arias

Gómez-Caro

Restrepo-Díaz

2020

Plants

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Vascular wilt caused by Fusarium oxysporum is the most limiting disease that affects cape gooseberry (Physalis peruviana L.) crops in Colombia. The use of synthetic elicitors for vascular wilt management is still scarce in Andean fruit species. The objective of the present study was to evaluate the effect and number of foliar applications of synthetic elicitors such as jasmonic acid (JA), salicylic acid (SA), brassinosteroids (BR), or a commercial resistance elicitor based on botanical extracts (BE) on disease progress and their effect on the physiology of cape gooseberry plants inoculated with F. oxysporum f. sp. physali. Groups of ten plants were separately sprayed once, twice, or three times with a foliar synthetic elicitor, respectively. Elicitor applications were performed at the following concentrations: JA (10 mL L−1), SA (100 mg L−1), BR (1 mL L−1) and BE (2.5 mL of commercial product (Loker®) L−1). The results showed that three foliar BR, SA, or BE applications reduced the area under the disease progress, severity index, and vascular browning in comparison to inoculated plants without any elicitor spray. Three BR, SA, or BE sprays also favored stomatal conductance, water potential, growth (total dry weight and leaf area) and fluorescence parameters of chlorophyll compared with inoculated and untreated plants with no elicitor sprays. Three foliar sprays of SA, BR, or BE enhanced photosynthetic pigments (leaf total chlorophyll and carotenoid content) and proline synthesis and decreased oxidative stress in Foph-inoculated plants. In addition, the effectiveness of three foliar BR, SA, or BE sprays was corroborated by three-dimensional plot and biplot analysis, in which it can evidence that stomatal conductance, proline synthesis, and efficacy percentage were accurate parameters to predict Foph management. On the hand, JA showed the lowest level of amelioration of the negative effects of Foph inoculation. In conclusion, the use of the synthetic elicitors BR, SA, or BE can be considered as a tool complementary for the commercial management of vascular wilt in areas where this disease is a limiting factor.

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Morpho-Physiological Traits and Molecular Intricacies Associated with Tolerance to Combined Drought and Pathogen Stress in Plants

Cited by 7 publications

References 83 publications

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Mitigation of the Impact of Vascular Wilt and Soil Hypoxia on Cape Gooseberry Plants by Foliar Application of Synthetic Elicitors

Climate resilient microbes in sustainable crop production

Physiological Responses to the Foliar Application of Synthetic Resistance Elicitors in Cape Gooseberry Seedlings Infected with Fusarium oxysporum f. sp. physali

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