Recurrent Selection by Herbicide Sublethal Dose and Drought Stress Results in Rapid Reduction of Herbicide Sensitivity in Junglerice

Autor:	Pâmela Carvalho-Moore, Lariza Benedetti, Gulab Rangani, Luis Antonio de Avila, Vívian Ebeling Viana, Nilda Roma-Burgos, Edinalvo Rabaioli Camargo
Rok vydání:	2020
Předmět:	0106 biological sciences Population weed resistance evolution Echinochloa 01 natural sciences Acclimatization lcsh:Agriculture chemistry.chemical_compound Quinclorac education water deficit education.field_of_study biology fungi lcsh:S food and beverages 04 agricultural and veterinary sciences low dose of herbicide biology.organism_classification APX Trehalose environmental stress Horticulture climate change chemistry Glyphosate 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Weed transcriptome Agronomy and Crop Science 010606 plant biology & botany
Zdroj:	Agronomy Volume 10 Issue 11 Agronomy, Vol 10, Iss 1619, p 1619 (2020)
ISSN:	2073-4395
DOI:	10.3390/agronomy10111619
Popis:	Echinochloa colona (junglerice) is a problematic global weed for many crops, primarily controlled with herbicides. Drought stress alters the overall plant physiology and reduces herbicide efficacy. This research aimed to study the joint effect of drought stress (DS) and recurrent selection with sublethal dose of herbicide on adaptive gene expression and herbicide efficacy on E. colona. Three factors were evaluated: (A) E. colona generation (G0, original population from susceptible standard G1 and G2, progenies of recurrent selection) (B) herbicide treatment (florpyrauxifen-benzyl, 0.25× glyphosate, 0.125× quinclorac, 0.125× the recommended dose and nontreated check) (C) DS (50% and 100% field capacity). Recurrent exposure to sublethal herbicide dose, combined with drought stress, favors the selection of plants less susceptible to the herbicide. Upregulation of defense (antioxidant) genes (APX: ascorbate peroxidase), herbicide detoxification genes (CYP450 family: cytochrome P450), stress acclimation genes (HSP: heat-shock protein, TPP: trehalose phosphate phosphatase, and TPS: trehalose phosphate synthase), and genes related to herbicide conjugation (UGT: UDP glucosyltransferase) in the G2 population was significant. Recurrent exposure to sublethal herbicide dose under drought stress reduces junglerice sensitivity to herbicide, seemingly due to &ldquo imprinted&rdquo upregulation of metabolic and protection genes in response to these stresses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8da27013f78636d68e07bd248fd488f4 https://doi.org/10.3390/agronomy10111619 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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