High temperature and salt stress response in French bean (Phaseolus vulgaris)
نویسنده
چکیده
Abiotic stresses, such as high temperature, and salt stress are major factors which reduce crop productivity. Effects of high temperature (46-48° C) and salt stress (0.4 M) on French bean (Phaseolus vulgaris), a major vegetable crop, were evaluated in terms of antioxidants and antioxidant enzymes in S-9 cultivar. Both stresses caused similar responses in the plant. Oxidative stress indicators such as H2O2, TBARS, glutathione, ascorbic acid, and proline were significantly elevated. Similarly, antioxidant enzyme, guaiacol-specific peroxidase (POX) was significantly elevated. Other enzymes, β-amylase and acid phosphatase (AP) activities were marginally enhanced. However, stresses had contrasting effects on glutathione reductase (GR) and catalase (CAT), which were drastically reduced in temperature stress, and elevated in salt stress. No variations were observed in AP, POX, and CAT isozymes. Patterns of GR and β-amylase isozymes differed between temperature and salt stress. SDS-PAGE indicated entirely different sets of proteins in temperature and salt stressed seedlings. Growth rate and fresh mass were affected to same extent, relative to their respective controls. DNA damage was more pronounced under temperature stress than under salt stress. Response mechanism of French bean appears to involve some players which are common to both the stresses, and few specific to individual stress.
منابع مشابه
The effect of priming on physiological and biochemical traits of French bean (Phaseolus vulgaris) under cobalt chloride stress
Extended Abstract Introduction: The germination stage ensures the durability, establishment, and final yield of plants. The final density of plants per unit area is resulted when the planted seeds germinate fully and with adequate rate. Plants mainly undergo abiotic stresses that are a considerable constraint for agricultural production worldwide. Seed priming is one of the simplest and cheap...
متن کاملSalt stress and transplant time in snap bean: growth and productive behaviour
High quality water is less available for agriculture and thus farmers often use saline water, that affects crop growth and yield. Snap bean (Phaseolus vulgaris) is sensitive to soil and water salinity, and also to heat stress. The aim of this research is to evaluate if a postponed transplant (high temperature stress) of snap bean can influence growth and yield under saline conditions. Snap bean...
متن کاملIdentification and functional characterization of novel miRNAs from French bean (Phaseolus vulgaris. L) under abiotic stress conditions
متن کامل
SALT STRESS AND GLUTATHIONE-DEPENDENT ENZYME ACTIVITIES IN BEAN (PHASEOLUS VULGARIS L.) Kaymakanova M.1*, L. Lyubenova2,
Salinization of agricultural areas due to intensive practices and irrigation is an important feature limiting crop yield and productivity. Inhibition of plant growth and even plant death by salinity is due to a reduction in water availability, sodium ion accumulation and mineral imbalances. In this context, ROS will be produced in both SALT STRESS AND GLUTATHIONE-DEPENDENT ENZYME ACTIVITIES IN ...
متن کاملResistance to high tempeRatuRe stRess of vaRious bean (Phaseolus vulgaris L.) cuLtivaRs and Lines
The high temperature stress-induced changes in chlorophyll a fluorescence parameters were used to study heat tolerance in nine accessions of common bean (Phaseolus vulgaris L.) received from the germplasm collection of “Maritsa” Vegetable Crops Research Institute and the Invstitute for Introduction and Plant Genetic Resources. The bean plants were treated for 2h at two temperatures, 23oC and 45...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008