Dehydration response in Stylosanthesscabra: transcriptional, biochemical, and physiological modulations.

tylosanthes scabra, popularly known as stylo, is native to the Brazilian Caatinga semi-arid region and stands out as a drought-tolerant shrub forage crop. This work pro-vides information about the plant response during the first 48 h of water deficit,followed by a rehydration treatment. Besides root transcriptomics data, 13 physiolog-ical or biochemical parameters were scrutinized. Additionally, RNA-Seq annotatedtranscripts not associated with the?Viridiplantae?clade were taxonomically catego-rized. It was found thatS. scabraquickly perceives and recovers from the oscillationsof the imposed water regime. Physiologically, mechanisms that minimize evapotrans-piration or protect the photosynthetic apparatus stood out. Biochemically, it wasfound that the root tissue invests in synthesizing compounds that can act as osmo-lytes (proline and sugars), emphasizing the importance of osmoregulation to waterdeficit acclimation. Consistently, transcriptome and qPCR analyses showed that a setof enriched biological processes with upregulated (UR) transcripts were involved inprotective functions against reactive oxygen species or encoding enzymes of impor-tant metabolic pathways, which might contribute toS. scabraresponse to water defi-cit. Additionally, several UR kinases and transcription factors were identified. Finally,in an innovative approach, some naturally occurring microbial groups (such asSchizo-saccharomyces,Bradyrhizobium, etc.) were identified in theS. scabraroots. This studyreveals insights into the physiological, biochemical, and molecular mechanisms under-lying theS. scabraresponse to water deficit and provides candidate genes that maybe useful in developing drought-tolerant crop varieties through biotechnologicalapplications

Bibliographic Details

Main Authors:	FERREIRA-NETO, R, C., ARAÚJO, F. C. de, SILVA, R. L. de O., MELO, N. F. de, PANDOLF, V., FROSI, G., MORAIS, D. A. de L., SILVA, M. D. da, RIVAS, R., SANTOS, M. G., AIDAR, S. de T., MORGANTE, C. V., BENKO-ISEPPON, A. M.
Other Authors:	RIBAMAR COSTA FERREIRA-NETO, UFPE; FLÁVIA CZEKALSKI DE ARAÚJO, UFPE; ROBERTA LANE DE OLIVEIRA SILVA, UFPE; NATONIEL FRANKLIN DE MELO, CPATSA; VALESCA PANDOLF, UFPE; GABRIELLA FROSI, Université de Sherbrooke,Sherbrooke, Québec, Canada; DAVID ANDERSON DE LIMA MORAIS, Université deSherbrooke, Sherbrooke, Québec, Canada; MANASSÉS DANIEL DA SILVA, UFPE; REBECA RIVAS, UFPE; MAURO GUIDA SANTOS, UFPE; SAULO DE TARSO AIDAR, CPATSA; CAROLINA VIANNA MORGANTE, CPATSA; ANA MARIA BENKO-ISEPPON, UFPE.
Format:	Artigo de periódico biblioteca
Language:	Portugues pt_BR
Published:	Physiologia Plantarum, 174( 6), e13821. 2022. 2022-11-23
Subjects:	Forrageira nativa, Planta resistente a seca, Deficit hídrico, Caatinga, Vegetação Nativa, Desidratação Química, Deficiência Hídrica, Hidratação, Fisiologia Vegetal, Resistência a Seca, Stylosanthes, Alternative crops, Drought tolerance,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1148636 https://doi.org/10.1111/ppl.13821
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