Sugar‐regulated susceptibility of tomato fruit to<i>Colletotrichum</i>and<i>Penicillium</i>requires differential mechanisms of pathogenicity and fruit responses

Ziv, Carmit; Kumar, Dilip; Sela, Noa; Itkin, Maxim; Malitsky, Sergey; Schaffer, Arthur A.; Prusky, D.

doi:10.1111/1462-2920.15031

Cited by 6 publications

(5 citation statements)

References 111 publications

(131 reference statements)

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“…For example, spermine treatment resulted in higher levels of glucose, fructose and sucrose in Arabidopsis, as well as higher resistance to B. cinerea . Moreover, Colletotrichum gloeosporioides showed enhanced colonization in tomato fruit with low sugar content ( Ziv et al, 2020 ). Acetic acid suppresses the growth of C. gloeosporioides directly, and lowers the rate of infection in strawberries ( Kang et al, 2003 ; Weber et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Constitutive Defense Mechanisms Have a Major Role in the Resistance of Woodland Strawberry Leaves Against Botrytis cinerea

et al. 2022

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The necrotrophic fungus Botrytis cinerea is a major threat to strawberry cultivation worldwide. By screening different Fragaria vesca genotypes for susceptibility to B. cinerea, we identified two genotypes with different resistance levels, a susceptible genotype F. vesca ssp. vesca Tenno 3 (T3) and a moderately resistant genotype F. vesca ssp. vesca Kreuzkogel 1 (K1). These two genotypes were used to identify the molecular basis for the increased resistance of K1 compared to T3. Fungal DNA quantification and microscopic observation of fungal growth in woodland strawberry leaves confirmed that the growth of B. cinerea was restricted during early stages of infection in K1 compared to T3. Gene expression analysis in both genotypes upon B. cinerea inoculation suggested that the restricted growth of B. cinerea was rather due to the constitutive resistance mechanisms of K1 instead of the induction of defense responses. Furthermore, we observed that the amount of total phenolics, total flavonoids, glucose, galactose, citric acid and ascorbic acid correlated positively with higher resistance, while H2O2 and sucrose correlated negatively. Therefore, we propose that K1 leaves are more resistant against B. cinerea compared to T3 leaves, prior to B. cinerea inoculation, due to a lower amount of innate H2O2, which is attributed to a higher level of antioxidants and antioxidant enzymes in K1. To conclude, this study provides important insights into the resistance mechanisms against B. cinerea, which highly depend on the innate antioxidative profile and specialized metabolites of woodland strawberry leaves.

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Section: Introductionmentioning

confidence: 99%

Constitutive Defense Mechanisms Have a Major Role in the Resistance of Woodland Strawberry Leaves Against Botrytis cinerea

et al. 2022

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“…Acidifying or alkalinizing pathogens decrease or increase the pH around their infection site, respectively (Prusky et al 2016 ). While various fungi employ different strategies, the specific fungal response is also much dependent on carbon and nitrogen availability (Bi et al 2016 , Ziv et al 2020 , Van Laethem et al 2021 ).…”

Section: Crops Protection: Ph-dependent Pathogenicity and Possible In...mentioning

confidence: 99%

Exploitation of microbial activities at low pH to enhance planetary health

Atasoy,

Álvarez Ordóñez,

Cenian

et al. 2023

FEMS Microbiology Reviews

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Awareness is growing that human health cannot be considered in isolation but is inextricably woven with the health of the environment in which we live. It is however under-recognised that the sustainability of human activities strongly relies on preserving the equilibrium of the microbial communities living in/on/around us. Microbial metabolic activities are instrumental for production, functionalization, processing and preservation of food. For circular economy, microbial metabolism would be exploited to produce building blocks for the chemical industry, to achieve effective crop protection, agri-food waste revalorization or biofuel production, as well as in bioremediation and bioaugmentation of contaminated areas. Low pH is undoubtedly a key physical-chemical parameter that needs to be considered for exploiting the powerful microbial metabolic arsenal. Deviation from optimal pH conditions has profound effects on shaping the microbial communities responsible for carrying out essential processes. Furthermore, novel strategies to combat contaminations and infections by pathogens rely on microbial-derived acidic molecules that suppress/inhibit their growth. Herein, we present the state-of-the-art of the knowledge on the impact of acidic pH in many applied areas and how this knowledge can guide us to use the immense arsenal of microbial metabolic activities for their more impactful exploitation in a Planetary Health perspective.

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“…Moreover, the specific gene responsive profiles for the two host lines differed significantly, which depended on the sugar level. The authors suggested that such differential response patterns may contribute to the differential host ranges for both pathogens (Ziv et al 2020).…”

Section: Sugar Metabolism Involved In Responses To Biotic Stressmentioning

confidence: 99%

Molecular basis for optimizing sugar metabolism and transport during fruit development

Chen

Zhang

et al. 2021

aBIOTECH

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Sugars are fundamental metabolites synthesized in leaves and further delivered to fruit in fruit crops. They not only provide ''sweetness'' as fruit quality traits, but also function as signaling molecules to modulate the responses of fruit to environmental stimuli. Therefore, the understanding to the molecular basis for sugar metabolism and transport is crucial for improving fruit quality and dissecting responses to abiotic/biotic factors. Here, we provide a review for molecular components involved in sugar metabolism and transport, crosstalk with hormone signaling, and the roles of sugars in responses to abiotic and biotic stresses. Moreover, we also envisage the strategies for optimizing sugar metabolism during fruit quality maintenance.

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Sugar‐regulated susceptibility of tomato fruit toColletotrichumandPenicilliumrequires differential mechanisms of pathogenicity and fruit responses

Cited by 6 publications

References 111 publications

Constitutive Defense Mechanisms Have a Major Role in the Resistance of Woodland Strawberry Leaves Against Botrytis cinerea

Constitutive Defense Mechanisms Have a Major Role in the Resistance of Woodland Strawberry Leaves Against Botrytis cinerea

Exploitation of microbial activities at low pH to enhance planetary health

Molecular basis for optimizing sugar metabolism and transport during fruit development

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