Subtractive libraries for prospecting differentially expressed genes in the soybean under water deficit.
Soybean has a wide range of applications in the industry and, due to its crop potential, its improvement is widely desirable. During drought conditions, soybean crops suffer significant losses in productivity. Therefore, understanding the responses of the soybean under this stress is an effective way of targeting crop improvement techniques. In this study, we employed the Suppressive Subtractive Hybridization (SSH) technique to investigate differentially expressed genes under water deficit conditions. Embrapa 48 and BR 16 soybean lines, known as drought-tolerant and -sensitive, respectively, were grown hydroponically and subjected to different short-term periods of stress by withholding the nutrient solution. Using this approach, we have identified genes expressed during the early response to water deficit in roots and leaves. These genes were compared among the lines to assess probable differences in the plant transcriptomes. In general, similar biochemical processes were predominant in both cultivars; however, there were more considerable differences between roots and leaves of Embrapa 48. Moreover, we present here a fast, clean and straightforward method to obtain drought-stressed root tissues and a large enriched collection of transcripts expressed by soybean plants under water deficit that can be useful for further studies towards the understanding of plant responses to stress.
Embrapa Soja, Laboratório de Biotecnologia Vegetal, Londrina, PR, Brazil.
Fabiana Aparecida
FA
Rodrigues
Juliana
J
Marcolino-Gomes
Josirlei
J
de Fátima Corrêa Carvalho
Leandro Costa
LC
do Nascimento
Norman
N
Neumaier
José Renato Bouças
JR
Farias
Marcelo Falsarella
MF
Carazzolle
Francismar Corrêa
FC
Marcelino
Alexandre Lima
AL
Nepomuceno