Evaluation of salicylic acid (SA) signaling pathways and molecular markers in Trichoderma-treated plants under salinity and Fusarium stresses. A Review

Boamah, Solomon; Ojangba, Theodora; Zhang, Shuwu; Na, Zhu; Osei, Richard; Tiika, Richard John; Boakye, Thomas Afriyie; Khurshid, Aroosa; Inayat, Rehan; Effah, Zechariah; Essel, Eunice; Xu, Bingliang

doi:10.1007/s10658-023-02660-9

Cited by 13 publications

(6 citation statements)

References 86 publications

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“…ICS genes ( ICS1 , ICS2 ) affiliated with pathogenesis‐associated proteins, like PR‐1 ‐ 7 , are among the important genes involved in the SA pathway in many plant species interacting with Trichoderma when attacked by different pathogens (Ali et al 2018). SA activates a number of PR genes, the proteins of which have antimicrobial properties (Boamah et al, 2023). The NONEXPRESSOR OF PR GENES1 (NPR1) protein is involved in the regulation of defense genes by SA, such as PR‐1 .…”

Section: Activation Of Plant Immune Response By Trichoderma and Phyto...mentioning

confidence: 99%

Insights into the molecular mechanism of Trichoderma stimulating plant growth and immunity against phytopathogens

Khan,

Najeeb,

Chen

et al. 2023

Physiologia Plantarum

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Trichoderma species have received significant interest as beneficial fungi for boosting plant growth and immunity against phytopathogens. By establishing a mutualistic relationship with plants, Trichoderma causes a series of intricate signaling events that eventually promote plant growth and improve disease resistance. The mechanisms contain the indirect or direct involvement of Trichoderma in enhancing plant growth by modulating phytohormones signaling pathways, improving uptake and accumulation of nutrients, and increasing soil bioavailability of nutrients. They contribute to plant resistance by stimulating systemic acquired resistance through salicylic acid, jasmonic acid, and ethylene signaling. A cascade of signal transduction processes initiated by the interaction of Trichoderma and plants regulate the expression of defense‐related genes, resulting in the synthesis of defense hormones and pathogenesis‐related proteins (PRPs), which collectively improve plant resistance. Additionally, advancements in omics technologies has led to the identification of key pathways, their regulating genes, and molecular interactions in the plant defense and growth promotion responses induced by Trichoderma. Deciphering the molecular mechanism behind Trichoderma's induction of plant defense and immunity is essential for harnessing the full plant beneficial potential of Trichoderma. This review article sheds light on the molecular mechanisms that underlie the positive effects of Trichoderma‐induced plant immunity and growth and opens new opportunities for developing environmentally friendly and innovative approaches to improve plant immunity and growth.

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Section: Activation Of Plant Immune Response By Trichoderma and Phyto...mentioning

confidence: 99%

Insights into the molecular mechanism of Trichoderma stimulating plant growth and immunity against phytopathogens

Khan,

Najeeb,

Chen

et al. 2023

Physiologia Plantarum

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“…SA is a key signalling 33 molecule in plant defense against pathogens and plays a vital role in activating the plant defense response. SA signalling pathways are known to be involved in ROS production, regulation of pathogenesisrelated proteins, synthesis of phytohormones (JA and ET) (Boamah et al, 2023). The recent studies demonstrated that SA is an essential hormone for plant immunity, HR response, and resistance to biotic invasion in local and systemic tissues.…”

Section: Results: 31 Pathogenicity Testmentioning

confidence: 99%

Induction of Resistance in Mungbean Against Cercospora Leaf Spot Through Plant Defense Activators

Laraib Malik,

Muhammad Atiq,

Nasir Ahmed Rajput

et al. 2023

Agric. Sci. J.

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Mungbean (Vigna radiata L. Wilczek), is a popular short-duration legume crop which is mostly cultivated in South and Southeast Asian countries. It is a rich source of proteins, carbohydrates, fats, minerals, and fibers. As an important source of dietary protein, it is usually consumed as whole seed or flour, or as sprouts. Cercospora Leaf Spot of Mungbean (CLSM) is a destructive disease caused by Cercospora canescens, which affects the whole crop, and causing 95% of yield losses. To mitigate these yield losses, five plant defense activators dipotassium hydrogen phosphate (K2HPO4), salicylic acid, carboxylic acid, citric acid, and benzoic acid were used in current study with 3 different concentrations (0.25, 0.5, and 0.75%) in a field trial arranged in randomized complete block design. Our field experiments revealed salicylic acid treated plants with minimum disease incidence (21.798%) followed by citric acid (25.131%), dipotassium hydrogen phosphate (27.466%), benzoic acid (29.064%), and carboxylic acid (35.043%) compared to untreated check. This revelation suggested the salicylic acid as a potent antifungal agent by activating the Mungbean defense systems for the management of CLSM.

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“…Previous studies suggest that lipoxygenase ( LOX ), 12–oxo–phytodienoic acid reductases ( OPRs ) and jasmonate zim‐domain ( JAZ ) are key JA‐signaling regulators and are associated with JA biosynthesis 44–46 . The pathogenesis‐associated genes ( PRs ), phenylalanine ammonia‐lyase ( PAL ) and 4‐coumarate:CoA ligase ( 4CL ) contribute to SA biosynthesis 47,48 . To evaluate whether saliva microbes of P. solenopsis affect plant defense responses, the expression of marker genes associated with the JA and SA signaling pathway was investigated, including LOX1 , OPR3 , JAZ1 , PR1 , PAL and 4CL .…”

Section: Methodsmentioning

confidence: 99%

“…[44][45][46] The pathogenesis-associated genes (PRs), phenylalanine ammonia-lyase (PAL) and 4-coumarate:CoA ligase (4CL) contribute to SA biosynthesis. 47,48 To evaluate whether saliva microbes of P. solenopsis affect plant defense responses, the expression of marker genes associated with the JA and SA signaling pathway was investigated, including LOX1, OPR3, JAZ1, PR1, PAL and 4CL. AB(+)-treated and AB(−)-treated third-instar mealybug nymphs were collected and transferred to clip-cages attached to cotton leaves (50 individuals per leaf).…”

Section: Expression Of Marker Gene Associated With the Plant Defense ...mentioning

confidence: 99%

Mealybug salivary microbes inhibit induced plant defenses

Zhao

Liu

et al. 2023

Pest Management Science

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BACKGROUNDPhenacoccus solenopsis is a polyphagous invasive mealybug that caused serious damage to crops worldwide. Phloem‐sucking hemipterans are known to carry symbiotic microbes in their saliva. However, the role of salivary bacteria of P. solenopsis in modulating plant defenses remains limited. Exploring the impact of salivary bacteria on plant defense responses will contribute to the development of new targets for efficient control of invasive mealybugs.RESULTSSalivary bacteria of the invasive mealybug P. solenopsis can suppress herbivore‐induced plant defenses and thus enhance mealybug fitness. Mealybugs treated with an antibiotic showed decreased weight gain, fecundity and survival. Untreated mealybugs suppressed jasmonic acid (JA)‐regulated defenses but activated salicylic acid (SA)‐regulated defenses in cotton plants. In contrast, antibiotic‐treated mealybugs triggered JA‐responsive gene expression and JA accumulation, and showed shortened phloem ingestion. Reinoculating antibiotic‐treated mealybugs with Enterobacteriaceae or Stenotrophomonas cultivated from mealybug saliva promoted phloem ingestion and fecundity, and restored the ability of mealybugs to suppress plant defenses. Fluorescence in situ hybridization visualization revealed that Enterobacteriaceae and Stenotrophomonas colonize salivary glands and are secreted into the mesophyll cells and phloem vessels. Exogenous application of the bacterial isolates to plant leaves inhibited JA‐responsive gene expression and activated SA‐responsive gene expression.CONCLUSIONOur findings imply that symbiotic bacteria in the saliva of the mealybug play an important role in manipulating herbivore‐induced plant defenses, enabling this important pest to evade induced plant defenses and promoting its performance and destructive effects on crops. © 2023 Society of Chemical Industry.

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Evaluation of salicylic acid (SA) signaling pathways and molecular markers in Trichoderma-treated plants under salinity and Fusarium stresses. A Review

Cited by 13 publications

References 86 publications

Insights into the molecular mechanism of Trichoderma stimulating plant growth and immunity against phytopathogens

Insights into the molecular mechanism of Trichoderma stimulating plant growth and immunity against phytopathogens

Induction of Resistance in Mungbean Against Cercospora Leaf Spot Through Plant Defense Activators

Mealybug salivary microbes inhibit induced plant defenses

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