Anatomical profiles validate gall morphospecies under similar morphotypes

Teixeira, Cristiane Trindade; Kuster, Vinícius Coelho; Carneiro, Renê Gonçalves da Silva; Cardoso, João Custódio Fernandes; Isaías, Rosy Mary dos Santos

doi:10.1007/s10265-022-01397-6

Cited by 3 publications

(2 citation statements)

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“…In our root histochemical analyses, it was possible to observe that lignification occurs only in the walls of the resistant genotype, confirming that there is already a natural anatomical predisposition that makes it difficult to choose these plants as hosts. Moreover, in this same genotype, we can observe in the histological images a differentiation of the sclerenchymatous tissue into aerenchyma that can contribute to the resistance process, since it has already been reported as responsible for improving the gas displacement in the cellular environment when there is an oxygen shortage, helping to avoid hypoxia (Yamauchi & Nakazono, 2022; Teixeira et al ., 2022).…”

Section: Discussionmentioning

confidence: 66%

“…Our root histochemical analyses revealed lignification exclusively in the walls of BGP 344 plants (Figure 5e), along with differentiation of the sclerenchymatous tissue into aerenchyma (Figure 5a and b). This adaptation improves gas exchange within the cellular environment under oxygen-deficient conditions, thereby mitigating hypoxia (Teixeira et al, 2022; Yamauchi and Nakazono, 2022). We believe that these anatomical predispositions make BGP 344 less susceptible to host insects than BGP 248.…”

Section: Discussionmentioning

confidence: 99%

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Lignin, glutathione and kinases play important roles inPaspalum regnelliidefense against spittlebug (Mahanarva spectabilis) attack

Begnami,

Aono,

Graciano

et al. 2023

Preprint

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Spittlebugs cause large production losses that affect agribusiness worldwide. Understanding plant-herbivore interactions at molecular level may be the key to developing resistant cultivars. We assembled a de novo transcriptome for elucidate the roots response from twoPaspalum regnelliigenotypes (BGP 248 and 344) to spittlebug (Mahanarva spectabilis) nymph attack, integrating differential expression analysis and complex network modeling, supplemented by a resistance field experiment and root anatomical analysis. GO terms related to different stress responses were enriched in BGP 248, such as salicylic acid catabolic process, while some specific to spittlebugs like response to herbivores were enriched in BP 344. KEGG enriched pathways were related to structural differences between genotypes, for example, cutin, suberin and wax biosynthesis. BP 344 also presented pathways related to induced defense, such as glutathione metabolism. Metabolic networks highlighted kinases, and coexpression networks demonstrated a greater complexity in their response cascade, which includes lncRNAs. This study provides the first molecular insights into the defense mechanisms ofP. regnelliiagainstM. spectabilis. It was identified that the genotype with the highest nymph mortality (BGP 344) has constitutive barriers, such as lignin, which delay the attack. In addition to presenting a glutathione pathway enriched and greater presence of kinases.

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%