Open AccessOverexpression of full-length and partial DREB2A enhances soybean drought tolerance
Author(s) -
Juliane Prela Marinho,
Renata Fuganti-Pagliarini,
Mayla Daiane Corrêa Molinari,
Juliana Marcolino-Gomes,
André Luís Hartmann Caranhoto,
Silvana Regina Rockenbach Marin,
M. C. N. de Oliveira,
José Salvador Simonet Foloni,
C. L. P. de Melo,
Satoshi Kidokoro,
Junya Mizoi,
Norihito Kanamori,
Kazuko YamaguchiShinozaki,
Kenichiro Nakashima,
Alexandre Lima Nepomuceno,
Liliane Márcia Mertz-Henning
Publication year - 2021
Publication title -
agronomy science and biotechnology
Language(s) - English
Resource type - Journals
ISSN - 2359-1455
DOI - 10.33158/asb.r141.v8.2022
Subject(s) - biology , germination , abiotic stress , drought tolerance , abiotic component , crop , regulator , yield (engineering) , horticulture , agronomy , gene , botany , genetics , paleontology , materials science , metallurgy
Soybean is an important commodity worldwide. Abiotic conditions can adversely disturb crop growth and final yield. The transcription factor Dehydration-Responsive Element-Binding Proteins 2 (DREB2) act as a regulator of drought-responses. This study aimed to characterize soybean plants genetically modified with GmDREB2A;2 FL and GmDREB2A;2 CA for molecular, physiological, and agronomic responses, at different developmental periods. Results showed that seedlings from GmDREB2A;2 FL event presented lower growth reduction under osmotic treatment during germination. The GmDREB2A;2 FL and GmDREB2A;2 CA events showed improved performance in experiments of water deficit imposed in the vegetative period and higher rates in physiological parameters. In the reproductive period, there was a trend of higher yield compounds in GM GmDREB2A;2 FL event when compared to other genotypes and treatments. It was suggested that GmDREB2A;2 FL event presented superior performance due to the higher expression levels of the cisgene and drought-induced genes.