Increased resistance of drought by Trichoderma harzianum fungal treatment correlates with increased secondary metabolites and proline content

Mona, S. Alwhibi; Hashem, Abeer; Abd_Allah, Elsayed Fathi; Alqarawi, Abdulaziz A.; Soliman, Dina A.; Wirth, Stephan; Egamberdieva, Dilfuza

doi:10.1016/s2095-3119(17)61695-2

Cited by 140 publications

(58 citation statements)

References 30 publications

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“…The increase in the concentration of proline in the tissues 15 DAI seems to be more an indicator of severe stress as reported in other studies (Alsamir et al, 2017;Mona et al, 2017), the authors use the proline contents as stress indicators, directly relating the severity of the symptoms with the content of proline. In agreement with the gs and RWC parameters, the increase in proline content occurred as a response to water shortage to maintain an osmotic adjustment in the leaves.…”

Section: Discussionmentioning

confidence: 56%

Boosting photosynthetic machinery and defense priming with chitosan application on tomato plants infected withFusarium oxysporumf. sp.lycopersici

Carmona

Villarreal-Navarrete

Burbano-David

et al. 2020

Preprint

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Physiological processes of plants infected by vascular pathogens are mainly affected by vascular bundle obstruction, decreasing the absorption of water and nutrients and gas exchange by stomatal closure, and inducing oxidative cascades and PSII alterations. Chitosan, a derivative of chitin present in the cell wall of some organisms including fungi, induces plant defense responses, activating systemic resistance. In this study, the effect of chitosan on the physiological and molecular responses of tomato plants infected with Fusarium oxysporum f. sp. lycopersici (Fol) was studied, evaluating the maximum potential quantum efficiency of PSII photochemistry (Fv/Fm), photochemical efficiency of PSII (Y(II)), photochemical quenching (qP), stomatal conductance (gs), relative water content (RWC), proline content, photosynthetic pigments, dry mass, and differential gene expression (PAL, LOXA, ERF1, and PR1) of defense markers. A reduction of 70% in the incidence and 91% in the severity of the disease was achieved in plants treated with chitosan, mitigating the damage caused by Fol on Fv/Fm, Y(II), and chlorophyll contents by 23%, 36%, and 47%, respectively. Less impact was observed on qP, gs, RWC, and dry mass (16%, 11%, and 26%, respectively). Chitosan-treated and Fol-infected plants over-expressed PR1a gene suggesting a priming-associated response. These results demonstrate the high potential of chitosan to protect tomato plants against Fol by regulating physiological and molecular responses in tomato plants.

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Section: Discussionmentioning

confidence: 56%

Boosting photosynthetic machinery and defense priming with chitosan application on tomato plants infected withFusarium oxysporumf. sp.lycopersici

Carmona

Villarreal-Navarrete

Burbano-David

et al. 2020

Preprint

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“…Nonetheless, we have observed how the rapeseed-root-inoculation with Trichoderma also increases its tolerance against drought ( Figure 1B) and salinity ( Figure 1C)-demonstrated in its productivity. Similarly, an increase in the salt-tolerance was observed with the inoculation of tomatoes with T. harzianum [16,19] and T. parareesei [24], of cucumber with T. harzianum [52], and of wheat with T. longibrachiatum [53,54]; also, regarding drought-tolerance, with the inoculation of tomato with T. longibrachiatum or T. harzianum [55,56]-never before analyzed in the case of rapeseed.…”

Section: Discussionmentioning

confidence: 64%

Trichoderma parareesei Favors the Tolerance of Rapeseed (Brassica napus L.) to Salinity and Drought Due to a Chorismate Mutase

Poveda

2020

Agronomy

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Both drought and salinity represent the greatest plant abiotic stresses in crops. Increasing plant tolerance against these environmental conditions must be a key strategy in the development of future agriculture. The genus of Trichoderma filament fungi includes several species widely used as biocontrol agents for plant diseases but also some with the ability to increase plant tolerance against abiotic stresses. In this sense, using the species T. parareesei and T. harzianum, we have verified the differences between the two after their application in rapeseed (Brassica napus) root inoculation, with T. parareesei being a more efficient alternative to increase rapeseed productivity under drought or salinity conditions. In addition, we have determined the role that T. parareesei chorismate mutase plays in its ability to promote tolerance to salinity and drought in plants by increasing the expression of genes related to the hormonal pathways of abscisic acid (ABA) under drought stress, and ethylene (ET) under salt stress.

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“…Up-regulation of the AsA-GSH pathway maintains the ratio of NADP/NADPH, leading to optimization of photosynthetic electron transport. Earlier, up-regulation of the antioxidant system due to drought stress has been reported by [7,92]. AMF-mediated up-regulation of the antioxidant system benefits plant metabolisms by maintaining the redox homeostasis.…”

Section: Discussionmentioning

confidence: 88%

Improved Drought Tolerance by AMF Inoculation in Maize (Zea mays) Involves Physiological and Biochemical Implications

Begum

Ahanger

et al. 2019

Plants

208

118

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The role of arbuscular mycorrhizal fungus (AMF, Glomus versiforme) in amelioration of drought-induced effects on growth and physio-biochemical attributes in maize (Zea mays L.) was studied. Maize plants were exposed to two drought regimes, i.e., moderate drought (MD) and severe drought (SD), with and without AMF inoculation. Drought at both levels reduced plant height, and chlorophyll and carotenoid content, thereby impeding photosynthesis. In addition, drought stress enhanced the generation of toxic reactive oxygen species (ROS), including H2O2, resulting in membrane damage reflected as increased electrolyte leakage and lipid peroxidation. Such negative effects were much more apparent under SD conditions that those of MD and the control, however, AMF inoculation significantly ameliorated the deleterious effects of drought-induced oxidative damage. Under control conditions, inoculation of AMF increased growth and photosynthesis by significantly improving chlorophyll content, mineral uptake and assimilation. AMF inoculation increased the content of compatible solutes, such as proline, sugars and free amino acids, assisting in maintaining the relative water content. Up-regulation of the antioxidant system was obvious in AMF-inoculated plants, thereby mediating quick alleviation of oxidative effects of drought through elimination of ROS. In addition, AMF mediated up-regulation of the antioxidant system contributed to maintenance of redox homeostasis, leading to protection of major metabolic pathways, including photosynthesis, as observed in the present study. Total phenols increased due to AMF inoculation under both MD and SD conditions. The present study advocates the beneficial role of G. versiforme inoculation in maize against drought stress.

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Increased resistance of drought by Trichoderma harzianum fungal treatment correlates with increased secondary metabolites and proline content

Cited by 140 publications

References 30 publications

Boosting photosynthetic machinery and defense priming with chitosan application on tomato plants infected withFusarium oxysporumf. sp.lycopersici

Boosting photosynthetic machinery and defense priming with chitosan application on tomato plants infected withFusarium oxysporumf. sp.lycopersici

Trichoderma parareesei Favors the Tolerance of Rapeseed (Brassica napus L.) to Salinity and Drought Due to a Chorismate Mutase

Improved Drought Tolerance by AMF Inoculation in Maize (Zea mays) Involves Physiological and Biochemical Implications

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