Herbivore‐induced rice resistance against rice blast mediated by salicylic acid

Zhang, Kai‐Li; Liu, Qing‐Song; Kang, Houxiang; Liu, Xiaomei; Chen, Xiu‐Ping; Peng, Yufa; Li, Yun‐He

doi:10.1111/1744-7917.12630

Cited by 11 publications

(7 citation statements)

References 43 publications

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“…In turn, application of MeJA and JA on rice plants activates diverse defense metabolites, including polyphenol oxidase, TrypPI, and plant volatiles, thereby leading to the direct and indirect resistance of plants to herbivores [ 14 , 42 , 43 ]. Previously, it has been shown that C. medinalis infestation suppresses the endogenous SA in rice plants [ 18 ]. Our results, together with those of previous reports, suggested that an antagonistic interaction of JA and SA might be involved in rice defense against C. medinalis .…”

Section: Discussionmentioning

confidence: 99%

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Transcriptomic and Metabolomic Responses of Rice Plants to Cnaphalocrocis medinalis Caterpillar Infestation

Wang

Liu

et al. 2020

Insects

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Interactions between plants and insect herbivores are important determinants of plant productivity in cultivated and natural agricultural fields. The rice leaf folder (Cnaphalocrocis medinalis) causes tremendous damage to rice production in Asian countries. However, little information is available about how rice plants defend themselves against this destructive pest at molecular and biochemical levels. Here, we observed the transcriptomic and metabolomic differences in rice leaves after 0, 1, 6, 12, and 24 h of being fed by C. medinalis using RNA sequencing and metabolome profiling. Transcriptional analyses showed that gene expression responds rapidly to leaf folder infestation, with the most significant transcriptional changes occurring within 6 h after the initiation of feeding. Metabolite abundance changed more slowly than gene expression. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses indicated that the rice transcriptional response to infestation involved genes encoding protein kinases, transcription factors, biosynthesis of secondary metabolites, photosynthesis, and phytohormone signaling. Moreover, the jasmonic acid-dependent signaling pathway triggered by leaf folder herbivory played a vital role in rice defense against this pest. Taken together, our results provide comprehensive insights into the defense system of rice to this species and may inform the development of insect-resistant rice varieties.

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Section: Discussionmentioning

confidence: 99%

“…A soft brush was used to place one 3rd-instar C. medinalis on the second leaf from the top. The larvae were starved for 2 h before experiments and confined within a small Parafilm bag [ 18 ]. For the time-course bioassays, the larvae were transferred to rice leaves for the final 1, 6, 12, or 24 h of the experiment ( Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

Transcriptomic and Metabolomic Responses of Rice Plants to Cnaphalocrocis medinalis Caterpillar Infestation

Wang

Liu

et al. 2020

Insects

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“…Similarly, Bemisia tabaci adults and nymphs both damage plants, but they all induce the SA pathway by suppressing the JA pathway (Zhang et al ., 2013; Zhang et al ., 2015; Zhang et al ., 2018a). In addition, only caterpillar larvae of Cnaphalocrocis medinalis and Chilo suppressalis cause damage to plants; these larvae activate the JA pathway but reduce or have no effect on the SA pathway (Zhang et al ., 2020). We hypothesize that this difference is due to different crosstalk interactions between JA and SA, with a positive crosstalk interaction between JA and SA possibly occurring in leafminer larva‐fed plants.…”

Section: Discussionmentioning

confidence: 99%

Feeding of pea leafminer larvae simultaneously activates jasmonic and salicylic acid pathways in plants to release a terpenoid for indirect defense

2020

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The pea leafminer, Liriomyza huidobrensis, is an important pest species affecting ornamental crops worldwide. Plant damage consists of oviposition and feeding punctures created by female adult flies as well as larva-bored mines in leaf mesophyll tissues. How plants indirectly defend themselves from these two types of leafminer damage has not been sufficiently investigated. In this study, we compared the indirect defense responses of bean plants infested by either female adults or larvae. Puncturing of leaves by adults released green leaf volatiles and terpenoids, while larval feeding caused plants to additionally emit methyl salicylate and (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT). Puncturing of plants by female adults induced increases in jasmonic acid (JA) and JA-related gene expressions but reduced the expressions of salicylic acid (SA)-related genes. In contrast, JA and SA and their-related gene expression levels were increased significantly by larval feeding. The exogenous application of JA+SA significantly triggered TMTT emission, thereby significantly inducing the orientation behavior of parasitoids. Our study has confirmed that larval feeding can trigger TMTT emission through the activation of both JA and SA pathways to attract parasitoids; however, TMTT alone is less attractive than the complete blend of volatiles released by infested plants.

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“…This has been well-attributed to pre and post herbivory attacks in plants [17][18][19] . Besides, SA has also been coined for its resilient role in enhancing resistance against insect induced pathogenic attacks 35 . The current results showed that JA and SA contents were not antagonistic to each other and both were higher as compared to control.…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic analysis of Dubas bug (Ommatissus lybicus Bergevin) infestation to Date Palm

Khan

Asaf

Khan

et al. 2020

Sci Rep

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Date palm (Phoenix dactylifera L.) and its fruit possess sociocultural, health and economic importance in Middle East. The date palm plantations are prone to Dubas bug (DB; Ommatissus lybicus DeBergevin; Homoptera: Tropiduchidae) attacks that severely damages the tree's growth and reduces fruit production. However, the transcriptome related datasets are not known to understand how DB activates physiological and gene regulatory mechanisms during infestation. Hence, we performed RnA-Seq of leaf infected with or without DB to understand the molecular responses of date palm seedlings. Before doing that, we noticed that DB infestation significantly increase superoxide anion and malondialdehyde production to two-folds as compared to healthy control. Stress-responsive genes such as proline transporter 2, NADP-dependent glyceraldehyde and superoxide dismutase were found significantly upregulated in infected seedlings. The infection repercussions were also revealed by significantly higher contents of endogenous phytohormonal signaling of jasmonic acid (JA) and salicylic acid (SA) compared with control. These findings persuaded to dig out intrinsic mechanisms and gene regulatory networks behind DB infestation to date palm by RNA-Seq analysis. Transcriptome analysis revealed upregulation of 6,919 genes and down-regulation of 2,695 genes in leaf during the infection process. The differentially expressed genes were mostly belongs to cellular functions (calcium and MAPK), phytohormones (auxin, gibberellins, abscisic acid, JA and SA), and secondary metabolites (especially coumarinates and gossypol). the data showed that defense responses were aggravated by gene networks involved in hypersensitive responses (PAR1, RIN4, PBS1 etc.). in conclusion, the results revealed that date palm's leaf up-regulates both cellular and phytohormonal determinants, followed by intrinsic hypersensitive responses to counter infestation process by Dubas bug. Date palm (Phoenix dactylifera L.) is one of the oldest fruits crop and has played particularly important role in the culture, economy and well-being of the people of Arabian region 1. It is widely grown in arid and semi-arid region , and distributed across 24 countries 2. The fruit is an important part of dietary intake due to its significant nutritional values. Like other countries in Arabian Peninsula, there are more than 300 date palm cultivars in Oman-the 8th largest producers of date fruits. Although with improved breading and tissue culture technologies, highly resistant varieties are cultivated in oasis, however, still the tree is confronted with pathogenic and insect attacks, hence reducing its growth, yield and production 3,4. The literature shows that date palm fruit decline significantly due to the attack of Dubas bug (Ommatissus lybicus Bergevin, Homoptera: Tropiduchidae) in the Middle East and North Africa, which is considered a major pests 3-5. Dubas bug (DB) was identified by Blumberg for the first time in the Tigris-Euphrates River Valley. Later on, he claimed that DB spread from...

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Herbivore‐induced rice resistance against rice blast mediated by salicylic acid

Cited by 11 publications

References 43 publications

Transcriptomic and Metabolomic Responses of Rice Plants to Cnaphalocrocis medinalis Caterpillar Infestation

Transcriptomic and Metabolomic Responses of Rice Plants to Cnaphalocrocis medinalis Caterpillar Infestation

Feeding of pea leafminer larvae simultaneously activates jasmonic and salicylic acid pathways in plants to release a terpenoid for indirect defense

Transcriptomic analysis of Dubas bug (Ommatissus lybicus Bergevin) infestation to Date Palm

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