Pseudomonas azotoformans FAP5, a novel biofilm-forming PGPR strain, alleviates drought stress in wheat plant

2021 ◽  
Author(s):  
F. A. Ansari ◽  
M. Jabeen ◽  
I. Ahmad
Keyword(s):  
Drought Stress ◽  
Wheat Plant ◽  
Pgpr Strain

scholarly journals Wheat Posture Acquisition System Based on Infrared Tracer Robot Design and Experiment

2021 ◽  
Author(s):  
xiuqing fu ◽  
Jianbo He ◽  
Zhuangzhuang Sun ◽  
Hongwen Zhang ◽  
Jieyu Xian
Keyword(s):  
Drought Stress ◽  
Plant Height ◽  
Inclination Angle ◽  
Image Acquisition ◽  
Wheat Plant ◽  
Acquisition System ◽  
Straight Line ◽  
Image Acquisition System ◽  
Leaf Inclination ◽  
And Control

Abstract Background:To investigate the effect of drought stress on wheat posture.Methods:An image acquisition system based on an infrared tracing robot was developed and a graphical user interface (GUI) software was designed to simplify the operation control of the robot. In this experiment, three genotypes of wheat, Ruihuamai 523, Jimai 22 and Xumai 33, were grown in indoor pots, and the images of wheatposture from flowering stage to maturity were collected to extract morphological parameters such as plant height, stem width and leaf inclination angle. Results:The experimental results showed that the deviation of linear trajectory was less than 3 mm when the robot traveled in a straight line at 0.4 m/s in the greenhouse; the image acquisition efficiency was about 18 images/min;the collected pictures of drought-stressed and control potted wheat groups can be used for posture assessment; the accuracy of wheat plant height and stem width with manual acquisition was 84.6% and 79.2%, respectively. After statistical analysis, it was concluded that drought stress and genotype and other influencing factors had no significant effect on plant height and stem width, but had a greater effect on leaf inclination angle.Conclusions:Therefore, this system can be used for posture collection of wheat.

scholarly journals Interactive Effects of Brassinosteroids and Timber Waste Biochar Enhances the Drought Tolerance Capacity of Wheat Plant

2021 ◽  
Author(s):  
Irfana Lalarukh ◽  
Zunaira Naeem ◽  
Nida Mansoora ◽  
Syeda Amjad Amjad ◽  
Shams Abdel-Hafez ◽  
...  
Keyword(s):  
Drought Stress ◽  
Photosynthetic Pigments ◽  
Foliar Application ◽  
Growth Parameters ◽  
Wheat Plant ◽  
Interactive Effects ◽  
Control Treatment ◽  
Enzymatic Antioxidants ◽  
Stress Indicators ◽  
Randomized Design

Abstract Drought stress is among the major constraints that threat agricultural productivity within the arid and semi-arid regions, worldwide. In this study, wheat (a strategic crop) was selected to test its growth under drought stress and the mechanisms beyond this adaptation while considering two factors, i.e., (1) deficit irrigation at 35% of the water holding capacity (WHC) versus 75% of WHC (Factor A) and (2) the following safe treatments: the control treatment (C), amending soil with biochar (BC) at a rate of 2%, foliar application of 24-epibrassinolide at two different levels (1 (BR1) or 3 (BR2) μmol) and the combination between BC and BR treatments. The obtained results were statistically analyzed, and the heat-map conceits between measured variables were also calculated by using the Python software. This investigation took place under the greenhouse conditions for 35 days following a complete randomized design and all treatments were replicated trice. Results obtained herein revealed that drought stress decreased all studied vegetative growth parameters (root and shoot biomasses) and photosynthetic pigments (chlorophyll a, b and total contents while increased oxidative stress indicators. All additives, specifically the combined ones BR1+BC and BR2+BC, were effective in increasing growth attributes, photosynthetic pigments and ion assimilation by wheat plants. They also upraised the levels of enzymatic and non-enzymatic antioxidants while decreased stress indicators. Furthermore, they increased Ca, P and K content within plants. It can therefore be deduced that the integral application of BR and BC is essential to mitigate drought stress in plants.

scholarly journals EFFECT OF NANO CHELATED NITROGEN AND UREA FERTILIZERS ON WHEAT PLANT UNDER DROUGHT STRESS CONDITION

Nativa ◽  
2018 ◽  
Vol 6 (6) ◽  
pp. 587 ◽  
Author(s):  
Naimeh Astaneh ◽  
Foroud Bazrafshan ◽  
Mahdi Zare ◽  
Bahram Amiri ◽  
Abdollah Bahrani
Keyword(s):  
Drought Stress ◽  
Stress Condition ◽  
Wheat Plant ◽  
Drought Stress Condition

scholarly journals DROUGHT STRESS IMPACTS ON WHEAT AND ITS RESISTANCE MECHANISMS

2020 ◽  
Vol 5 (2) ◽  
pp. 67-76
Author(s):  
Bipin Rijal ◽  
Prakash Baduwal ◽  
Madhukar Chaudhary ◽  
Sandesh Chapagain ◽  
Sushank Khanal ◽  
...  
Keyword(s):  
Drought Stress ◽  
Water Relations ◽  
Morphological Changes ◽  
Wheat Yield ◽  
Leaf Size ◽  
Wheat Plant ◽  
Crop Productivity ◽  
Plant Water Relations ◽  
Plant Water ◽  
Chlorophyll Contents

Scarcity of water has been a serious agricultural hindrance to crop productivity since antiquity. Drought-stressed loss in wheat yield likely exceeds losses from all other causes, since both the severity and duration of the stress are censorious. Here, we have reviewed the effects of drought stress on the morphological, physiological, and biochemical attributes along with the growth impacts, water relations, and photosynthesis impacts in wheat. This review also illustrates the mechanism of drought resistance in wheat. Historical drought years in Nepal have been identified and the yield losses were assessed. Wheat encounters a variety of morphological, physiological, biochemical responses at cellular and molecular levels towards prevailing water stress, thus making it a complex phenomenon. Drought stress affects leaf size, stems elongation and root proliferation, imbalance plant-water relations and decline water-use efficiency. Different types of physiological research are ongoing to find out the changes occurs in the wheat plant as a result of drought stress. Morphological changes can be looked through two ways: changes in root system and changes in shoot system such as effects on height, leaf senescence, flowering, and so on. Physiological changes involve changes in cell growth pattern, chlorophyll contents, photosynthetic disturbances, plant-water relations, etc. Biochemical changes occur in different chemical, biomolecules, and enzymes. Plants portray several mechanisms to withstand drought stress which can be classified as Drought escape, Drought avoidance, and Drought tolerance. Selection of wheat genotype that can tolerate water scarcity would be suitable for the breeding program aiming to development of drought tolerant variety under water limited regions.

scholarly journals Erratum to “The specific W-boxes of GAPC5 promoter bound by TaWRKY are involved in drought stress response in wheat” [Plant Sci. 296 (2020) 110460]

Plant Science ◽  
2020 ◽  
Vol 298 ◽  
pp. 110583
Author(s):  
Fangfang Li ◽  
Lin Zhang ◽  
Haikun Ji ◽  
Zhiyong Xu ◽  
Ye Zhou ◽  
...  
Keyword(s):  
Drought Stress ◽  
Stress Response ◽  
Wheat Plant

Flavonoid profiling by LC-MS IN 14 – 3-3ν knockout mutants of Arabidopsis thaliana during drought stress conditions

Planta Medica ◽  
2014 ◽  
Vol 80 (10) ◽  
Author(s):  
F Nabbie ◽  
O Shperdheja ◽  
J Millot ◽  
J Lindberg ◽  
B Peethambaran
Keyword(s):  
Arabidopsis Thaliana ◽  
Drought Stress ◽  
Stress Conditions ◽  
Knockout Mutants

Mitigation Effects of 24-Epibrassinolide and Thiourea in Field Pea (Pisum sativum L.) under Drought Stress

2018 ◽  
Vol 34 (2) ◽  
pp. 229-235 ◽  
Author(s):  
Prachi Garg ◽  
◽  
A. Hemantaranjan ◽  
Jyostnarani Pradhan ◽  
◽  
...  
Keyword(s):  
Drought Stress ◽  
Pisum Sativum ◽  
Field Pea ◽  
Pisum Sativum L

Water balance, drought stress and yields for rainfed field crop rotations under present and future conditions in the Czech Republic

2015 ◽  
Vol 65 ◽  
pp. 175-192 ◽  
Author(s):  
P Hlavinka ◽  
KC Kersebaum ◽  
M Dubrovský ◽  
M Fischer ◽  
E Pohanková ◽  
...  
Keyword(s):  
Czech Republic ◽  
Drought Stress ◽  
Water Balance ◽  
Crop Rotations ◽  
Field Crop ◽  
The Czech Republic

EVALUATION OF CLOVERS ON SANDY COASTAL SOIL

1977 ◽  
pp. 130-138 ◽  
Author(s):  
W.M. Williams ◽  
L.B. Anderson ◽  
B.M. Cooper
Keyword(s):  
New Zealand ◽  
Drought Stress ◽  
Sandy Soil ◽  
White Clover ◽  
Plant Material ◽  
Red Clover ◽  
Early Spring ◽  
Commercial Cultivars ◽  
Mediterranean Origin ◽  
Winter Annual

In evaluations of clover performances on summer-dry Himatangi sandy soil, it was found that none could match lucerne over summer. Emphasis was therefore placed on production in autumn-winter- early spring when lucerne growth was slow. Evaluations of some winter annual clover species suggested that Trifolium spumosum, T. pallidum, T. resupinatum, and T. vesiculosum would justify further investigation, along with T. subterraneum which is already used in pastures on this soil type. Among the perennial clover species, Kenya white clover (7'. semipilosum) showed outstanding recovery from drought and was the only species to produce significantly in autumn. However, it failed to grow in winter-early spring. Within red clover, materials of New Zealand x Moroccan origin substantially outproduced the commercial cultivars. Within white clover, material from Israel, Italy and Lebanon, as well as progeny of a selected New Zealand plant, showed more rapid recovery from drought stress and subsequently better winter growth than New Zealand commercial material ('Grasslands Huia'). The wider use of plant material of Mediterranean origin and of plants collected in New Zealand dryland pastures is advocated in development of clover cultivars for New Zealand dryland situations.

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