Journal of Agricultural Science and Technology
Journal of Agricultural Science and Technology
JAST
Agriculture
http://jast.modares.ac.ir
1
admin
1680-7073
2345-3737
10.22034/jast
en
jalali
1392
9
1
gregorian
2013
12
1
15
7
online
1
fulltext
en
Differential Expression of CA7 and NCED Genes in Common Bean Genotypes under Drought Stress
The response of plants to drought stress depends on several factors including the plant developmental stage and the length and severity of the stress applied. Common bean (<em>Phaseolus vulgaris</em> L.) is the most important pulse crop that is cultivated worldwide for human consumption. Understanding of the mechanisms responsible for its response to drought is, therefore, essential. An increasing number of reports show that withdrawal of water from plants growing in the controlled conditions is accompanied by changes in the expression of a number of genes. To our knowledge, regulation of gene expression in flower buds of <em>P. vulgaris</em> under stress conditions has not been reported. Our aim was to identify transcription sensitivity of <em>CA7</em> and <em>NCED</em> genes under water deficit stress at vegetative and reproductive stages of different bean genotypes. Two experiments were carried out. Within each experiment, the groups of drought-stressed plants were subjected to water withholding, while the control plants were watered every other day. Stressed plants were re-irrigated when RWC reached 66±2 percent. Our study showed that <em>CA7</em> and <em>NCDE</em> were genes differentially expressed in the studied genotypes under drought stress. The expression of these genes was strongly induced in response to drought stress in flower buds of the cultivar Jules and the line KS-21191. It seems that under stress conditions, these genes express more in the tolerant than the susceptible genotypes. Therefore, these two genes could probably be used to obtain plants relatively tolerant to water deficit stress, especially in the reproductive stage of plant growth.
Flower buds,Gene expression,Phaseolus vulgaris,Water deficit
1491
1499
http://jast.modares.ac.ir/browse.php?a_code=A-23-1000-5875&slc_lang=en&sid=23
M.
Khodambashi
M.
Khodambashi
100319475328460050063
100319475328460050063
Yes
Department of Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Islamic Republic of Iran.
Department of Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Islamic Republic of Iran.
B.
Shiran
B.
Shiran
100319475328460050062
100319475328460050062
No
Department of Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Islamic Republic of Iran.
Department of Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Islamic Republic of Iran.
N.
Gharaghanipour
N.
Gharaghanipour
100319475328460050061
100319475328460050061
No
Department of Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Islamic Republic of Iran.
Department of Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Islamic Republic of Iran.