Premium
Field evaluation of At DREB 2A CA overexpressing sugarcane for drought tolerance
Author(s) -
Souza Wagner Rodrigo,
Oliveira Nelson Geraldo,
Vinecky Felipe,
Ribeiro Ana Paula,
Basso Marcos Fernando,
Casari Raphael Augusto das Chagas Noqueli,
Cunha Bárbara Andrade Dias Brito,
Duarte Karoline Estefani,
Santiago Thaís Ribeiro,
Martins Polyana Kelly,
AuciquePerez Carlos Eduardo,
Júnior Sílvio Carlos Cristofoletti,
Nepomuceno Alexandre Lima,
Sousa Carlos Antônio Ferreira,
Kobayashi Adilson Kenji,
Nakashima Kazuo,
YamaguchiShinozaki Kazuko,
Molinari Hugo Bruno Correa
Publication year - 2019
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/jac.12341
Subject(s) - drought tolerance , agronomy , saccharum , crop , cultivar , sugar , biology , environmental science , biochemistry
Climate change is undoubtedly altering the atmosphere, occasioning extreme temperatures that can cause weather calamities such as droughts and floods. Among the major constraints limiting crop production, drought is one of the most important. Sugarcane ( Saccharum spp. hybrid) is considered an important economic crop not only for sugar production, but also for ethanol generation, serving as an expandable green alternative to crude oil use. To take advantage of the use of sugarcane as renewable source for bioethanol production, it is important to increase its productivity without increasing land use, which includes cultivation under hostile conditions, such as water‐limited environments. Previously, we demonstrated that stress‐inducible overexpression of the transcription factor At DREB 2A CA conferred drought tolerance in sugarcane subjected to water deficit under greenhouse conditions. In the present work, the At DREB 2A CA transgenic sugarcane lines were evaluated in the field in two representative seasonally dry regions of Brazil. The results demonstrated that the At DREB 2A CA sugarcane lines presented higher yield and productivity when compared to non‐transformed plants under drought, representing a suitable strategy for the development of new drought‐tolerant cultivars.