Heat shock transcription factors in banana: genome-wide characterization and expression profile analysis during development and stress response

Abstract

Banana (Musa acuminata) is one of the most popular fresh fruits. However, the rapid spread of fungal pathogen Fusarium oxysporum f. sp. cubense (Foc) in tropical areas severely affected banana growth and production. Thus, it is very important to identify candidate genes involved in banana response to abiotic stress and pathogen infection, as well as the molecular mechanism and possible utilization for genetic breeding. Heat stress transcription factors (Hsfs) are widely known for their common involvement in various abiotic stresses and plant-pathogen interaction. However, no MaHsf has been identified in banana, as well as its possible role. In this study, genome-wide identification and further analyses of evolution, gene structure and conserved motifs showed closer relationship of them in every subgroup. The comprehensive expression profiles of MaHsfs revealed the tissue- and developmental stage-specific or dependent, as well as abiotic and biotic stress-responsive expressions of them. The common regulation of several MaHsfs by abiotic and biotic stress indicated the possible roles of them in plant stress responses. Taken together, this study extended our understanding of MaHsf gene family and identified some candidate MaHsfs with specific expression profiles, which may be used as potential candidates for genetic breeding in banana.

Genome-Wide Identification and Characterization of Heat-Shock Transcription Factors in Rubber Tree

“…The number of Hsf members is 18 in plums [15], 21 in Arabidopsis [5], 25 in rice [6], 25 in apples [8], and 32 in cassavas [25]; these plants are diplontic. The number of Hsf members increases in allopolyploids-there are 43 in triploid banana plants [13], 59 in tetraploid soybean plants [9], and 56 in sextaploid wheat plants [10]. On the basis of the version of the rubber-tree genome [21] and verification by RT-PCR, 30 HbHsf genes were isolated in the present study.…”

“…By activating their target stress-related genes, Hsfs play an important role in regulating plant adaption to various abiotic stresses [1]. Genome-wide identification of Hsfs has been performed in plants such as Arabidopsis [5], rice [6,7], apple [8], soybean [9], wheat [10], Chinese cabbage [11], strawberry [12], banana [13], rape [14], and plum [15]. These works provide a basis for integrating Hsf function into the regulation of plant growth and development by adaption to avoidable abiotic stresses.…”

Identification, evolution and functional inference on the cold-shock domain protein family in Pak-choi (Brassica rapa ssp. chinensis) and Chinese cabbage (Brassica rapa ssp. pekinensis)

“…This phenomenon, known as cold acclimation, is a cumulative process that is activated once temperatures fall below a critical threshold temperature (Fowler 2008). As one of the most popular fresh vegetables, Pak-choi is often subjected to a variety of biological stresses and abiotic stresses throughout all the growth and development stages (Wei et al 2016). Low temperature limits the normal growth development of plants directly through the inhibition of metabolic reactions, limiting the normal growth development of plants indirectly through cold-induced osmotic and oxidative stresses (Chinnusamy et al 2007).…”

Genome-wide analysis of heptahelical protein (HHP) gene family and expression of BcHHP1 in response to stresses in Brassica rapa

“…As one of the most popular fresh vegetables, B. rapa ssp. chinensis is often subjected to a variety of biotic and abiotic stresses throughout all development stages (Wei et al 2016). Low temperature limits the growth by the inhibition of metabolic reactions, oxidative stress, and inhibition of water uptake (Chinnusamy et al 2007).…”