Effects of Severe Drought Stress on Some Physiological and Biochemical Parameters of AMF Inoculated C. arietinum

Vermicompost can play an effective and important role in plant growth and development and also in reducing harmful effects of various environmental stresses on plants. The vermicompost fertilizer application was evaluated for the growth, physiological and biochemical parameters of lettuce (Lactuca sativa var. crispa) plants under drought stress conditions. Tests were carried out at different levels of vermicompost (0, 2.5 and 5%) and drought stress [no stress, moderate drought, and severe drought at 100, 50 and 25% of field capacity]. In comparison to control (vermicompost at 0%), lettuce plants treated with vermicompost at 2.5 or 5% had higher shoot height, shoot fresh weight, relative water content, stomatal conductance, chlorophyll a, chlorophyll b , total chlorophyll and carotenoid contents under moderate and severe drought stress conditions. Malondialdehyde (MDA) content and superoxide dismutase (SOD) and catalase (CAT) activities increased while plants under drought stress conditions. Application of vermicompost caused higher SOD and CAT enzyme activities and lower MDA content under drought stress. Enhancement in antioxidant enzyme activities as a result of vermicompost destroyed reactive oxygen species. Therefore, application of vermicompost under moderate and severe drought stress decreased MDA content in lettuce plant cells. Data indicated a positive effect of the vermicompost on the growth of lettuce under drought stress conditions.

Download Full-text

Morphological, Physiological and Biochemical Responses of Poplar Plants to Drought Stress

Journal of AgriSearch ◽

10.21921/jas.5.3.7 ◽

2018 ◽

Vol 5 (03) ◽

Author(s):

ARADHNA KUMARI ◽

IM KHAN ◽

ANIL KUMAR SINGH ◽

SANTOSH KUMAR SINGH

Keyword(s):

Water Stress ◽

Drought Stress ◽

Biochemical Parameters ◽

Sugar Content ◽

Soluble Sugar ◽

Field Capacity ◽

Drought Event ◽

Total Biomass ◽

Biochemical Responses ◽

Physiological And Biochemical

Poplar clone Kranti was selected to assess the morphological, physiological and biochemical responses under drought at different levels of water stress, as it is a common clone used to be grown in Uttarakhand for making paper and plywood. The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity) and changes in physiological and biochemical parameters related with drought tolerance were recorded. Alterations in physiological (i.e. decrease in relative water content) and biochemical parameters (i.e. increase in proline and soluble sugar content and build-up of malondialdehyde by-products) occurred in all the three levels of water stress, although drought represented the major determinant. Drought treatments (75%, 50% and 25% FC) decreased plant height, radial stem diameter, harvest index, total biomass content and RWC in all the three watering regimes compared to control (100% FC). Biochemical parameters like proline, soluble sugar and MDA content increased with severity and duration of stress, which helped plants to survive under severe stress. It was analyzed that for better wood yield poplar seedlings should avail either optimum amount of water (amount nearly equal to field capacity of soil) or maximum withdrawal up to 75% of field capacity up to seedling establishment period (60 days). Furthermore, this study manifested that acclimation to drought stress is related with the rapidity, severity, and duration of the drought event of the poplar species.

Download Full-text

Physiological and biochemical responses to severe drought stress of nine Eucalyptus globulus clones: a multivariate approach

Tree Physiology ◽

10.1093/treephys/tpu052 ◽

2014 ◽

Vol 34 (7) ◽

pp. 778-786 ◽

Cited By ~ 19

Author(s):

V. Granda ◽

C. Delatorre ◽

C. Cuesta ◽

M. L. Centeno ◽

B. Fernandez ◽

...

Keyword(s):

Drought Stress ◽

Eucalyptus Globulus ◽

Severe Drought ◽

Multivariate Approach ◽

Biochemical Responses ◽

Physiological And Biochemical

Download Full-text

Effects of drought stress on growth, physiological and biochemical parameters in fine roots of Quercus variabilis Bl. seedlings

Acta Ecologica Sinica ◽

10.5846/stxb201212101774 ◽

2014 ◽

Vol 34 (15) ◽

Cited By ~ 1

Author(s):

吴敏 WU Min ◽

张文辉 ZHANG Wenhui ◽

周建云 ZHOU Jianyun ◽

马闯 MA Chuang ◽

韩文娟 Han Wenjuan

Keyword(s):

Drought Stress ◽

Fine Roots ◽

Biochemical Parameters ◽

Quercus Variabilis ◽

Effects Of Drought ◽

Physiological And Biochemical

Download Full-text

Impact of phopshate solubilizing bacteria (Bacillus polymixa) on drought tolerance of green gram [Vigna radiata (L.) Wilczek]

Annals of Plant Sciences ◽

10.21746/aps.2016.04.001 ◽

2016 ◽

Vol 5 (04) ◽

pp. 1318

Author(s):

Vidya P. ◽

Shintu V. P.* ◽

Jayaram M. K.

Keyword(s):

Drought Stress ◽

Vigna Radiata ◽

Biochemical Parameters ◽

Soil Phosphorus ◽

Phosphorus Uptake ◽

Germination Percentage ◽

Green Gram ◽

Phosphate Solubilizing Bacteria ◽

Root And Shoot Length ◽

Physiological And Biochemical

The main focus of the present study is to evaluate the effect of priming of green gram (Vigna radiata) with phosphate solubilising bacteria (PSB) during drought stress. Drought is the major abiotic stress factor which diminishing the growth and development of agricultural in Kerala. So immediate steps need to be taken to overcome the adverse effect of drought stress for the development of agriculture. Phosphate Solubilizing Bacteria are one of the best microorganisms found to be simultaneously increasing the insoluble soil Phosphorus uptake by the plant and crop yield. In the study, the seeds of Vigna radiata were subjected to priming treatment with 0.5 % and 1% phosphate solubilising bacteria. Physiological and biochemical parameters like germination percentage, root and shoot length, relative water content (RWC), amount of chlorophyll, protein, proline and yield were studied. Inoculation with phosphate solubilising bacteria showed remarkable variation in both physiological and biochemical parameters of green gram plants. Among the two concentrations tested, 1% phosphate solubilising bacteria was found to be effective in mitigating the effect of water stress, stimulating early flowering and also in increasing yield.

Download Full-text

Change in physiological and biochemical parameters under drought stress in salt-tolerant and salt-susceptible eggplant genotypes

TURKISH JOURNAL OF AGRICULTURE AND FORESTRY ◽

10.3906/tar-1808-1 ◽

2019 ◽

Vol 43 (6) ◽

pp. 593-602

Author(s):

Sevinç KIRAN ◽

Şebnem KUŞVURAN ◽

Fatma ÖZKAY ◽

Ş. Şebnem ELLİALTIOĞLU

Keyword(s):

Drought Stress ◽

Biochemical Parameters ◽

Salt Tolerant ◽

Salt Susceptible ◽

Physiological And Biochemical

Download Full-text

Isoprene emission is not temperature-dependent during and after severe drought-stress: a physiological and biochemical analysis

The Plant Journal ◽

10.1111/j.1365-313x.2008.03538.x ◽

2008 ◽

Vol 55 (4) ◽

pp. 687-697 ◽

Cited By ~ 116

Author(s):

Alessio Fortunati ◽

Csengele Barta ◽

Federico Brilli ◽

Mauro Centritto ◽

Ina Zimmer ◽

...

Keyword(s):

Drought Stress ◽

Biochemical Analysis ◽

Severe Drought ◽

Temperature Dependent ◽

Isoprene Emission ◽

Physiological And Biochemical

Download Full-text

Physiological and Biochemical Responses of Invasive Species Cenchrus pauciflorus Benth to Drought Stress

Sustainability ◽

10.3390/su13115976 ◽

2021 ◽

Vol 13 (11) ◽

pp. 5976

Author(s):

Liye Zhou ◽

Xun Tian ◽

Beimi Cui ◽

Adil Hussain

Keyword(s):

Drought Stress ◽

Invasive Plant ◽

Soluble Sugars ◽

Population Expansion ◽

Stress Conditions ◽

Control Treatment ◽

Economic Losses ◽

Antioxidant Enzyme Activities ◽

Severe Drought ◽

Physiological And Biochemical

The invasive plant Cenchrus pauciflorus Benth exhibits strong adaptability to stress, especially drought. When newly introduced certain plant species can become invasive and quickly spread in an area due to lack of competition, potentially disturbing the ecological balance and species diversity. C. pauciflorus has been known to cause huge economic losses to agriculture and animal husbandry. Thus, understanding the physiological responses of C. pauciflorus to drought stress could help explore the role of C. pauciflorus in population expansion in sandy land environments. In this study, we evaluated the response of C. pauciflorus to induced low, moderate, and severe drought stress conditions. Results showed a linear reduction in the fresh weight (FW), dry weight (DW), and relative water content (RWC) of the aboveground parts of C. pauciflorus following drought stress as compared to the control plants (no drought stress). Chemical analyses showed that the drought treatments significantly induced the production of proline, soluble proteins, soluble sugars, MDA, and free amino acids as compared to the control treatment (no drought stress). On the other hand, the starch content was significantly reduced in drought-treated plants. This was also accompanied by a significant linear increase in the antioxidant enzyme activities (SOD, POD, and CAT) in plants subjected to drought stress. On the basis of physiological and biochemical analyses, we propose that C. pauciflorus has evolved to survive harsh drought stress conditions of the desert via sophisticated biochemical adjustment and antioxidant reprograming that allows protection against damage caused by drought stress.

Download Full-text