Nitrogen Metabolism and Antioxidant System in Young Plants of Parkia pendula Submitted to Drought

The (Parkia pendula (Willd.) Benth. ex Walp.) species most know as visgueiro is a native specie from the Amazon region, belongs to the family Fabaceae-mimosoideae and has been scientifically studied because it is used in landscape projects and the restoration of degraded areas. Intrinsic responses of this species due to water stress is still very superficial, lacking a larger scientific approach in nitrogen and oxidative parameters. For this, a greenhouse experiment was set up in the Federal Rural University of Amazon with seedlings, where they were submitted to water restriction. The experimental design was completely randomized in a 2 × 3 factorial design (control and water deficit, and three evaluation times), with 5 replications, totaling 30 experimental units. The results showed that the RWC reduced during the experiment from 73.5% to 52.99%, evidencing a lower amount of water in these plants. This condition caused the plants to respond positively to the increase of antioxidant enzymes (catalase, APX and SOD), making the plant defense system efficient. As well as for some variables of nitrogen metabolism. The results showed that the RWC reduced during the experiment from 73.5% to 52.99%, evidencing a lower amount of water in these plants. This condition caused the plants to respond positively to the increase of antioxidant enzymes (catalase, APX and SOD), making the plant defense system efficient. As well as for some variables of nitrogen metabolism. The species in this experimental condition was considered as sensitive to the water stress condition.

Download Full-text

Sodium silicate mediated response of antioxidative defense system in Lycopersicon esculentum mill. under water stress

International Journal of Phytomedicine ◽

10.5138/09750185.2108 ◽

2017 ◽

Vol 9 (2) ◽

Cited By ~ 2

Author(s):

Chanchal Malhotra ◽

Riti Thapar Kapoor ◽

Deepak Ganjewala ◽

NB Singh

Keyword(s):

Antioxidant Enzymes ◽

Water Stress ◽

Lycopersicon Esculentum ◽

Water Deficit ◽

Sodium Silicate ◽

Antioxidative Defense ◽

Defense System ◽

Tomato Plants ◽

Antioxidative Defense System ◽

Water Stress Condition

The present study was designed to study the effect of water stress on Lycopersicon esculentum Mill. and role of sodium silicate in the protection of tomato plants under water deficit condition.Different biochemical parameters such as photosynthetic pigments, protein, sugar, MDA content, proline, nitrate reductase activity and activities of antioxidant enzymes (SOD, CAT, APX and POX) were examined in tomato leaves at 40 and 60 DAS by the standard methods. The lycopene and β-carotene contentsin tomato fruits were also analyzed at 60, 65 and 70 DAS.Water stress significantly decreased relative water content (RWC), pigment content, sugar and protein contents in tomato leaves at 60 DAS but the accumulation of proline was stimulated in tomato leaves under water deficit condition. The activities of antioxidant enzymes such as SOD, CAT, APX and POX were significantly increased under (3d and 6d) water stress condition at 60 DAS.This study offers first hand information on the water stress-induced oxidative stress in Lycopersicon esculentumand development of antioxidative defense system against drought.The results obtained clearly indicated the positive impact of sodium silicate in protection of tomato plants under water deficit condition.

Download Full-text

Genetic diversity of french bean (Phaseolus vulgaris L.) under water stress condition

Bangladesh Journal of Plant Breeding and Genetics ◽

10.3329/bjpbg.v22i1.9073 ◽

2011 ◽

Vol 22 (1) ◽

Author(s):

AK Choudhury ◽

MA Karim ◽

QA Khaliq ◽

MM Haque ◽

JU Ahmed ◽

...

Keyword(s):

Genetic Diversity ◽

Water Stress ◽

Phaseolus Vulgaris ◽

Stress Condition ◽

French Bean ◽

Water Stress Condition

Download Full-text

Physiological and Yield Responses of Green-Shelled Beans (Phaseolus vulgaris L.) Grown under Restricted Irrigation

Agronomy ◽

10.3390/agronomy11030562 ◽

2021 ◽

Vol 11 (3) ◽

pp. 562

Author(s):

Karen Campos ◽

Andrés R. Schwember ◽

Daniel Machado ◽

Mónica Ozores-Hampton ◽

Pilar M. Gil

Keyword(s):

Water Stress ◽

Deficit Irrigation ◽

Pot Experiment ◽

Water Restriction ◽

One Pot ◽

Dry Land ◽

Severe Water Stress ◽

The Face ◽

Use Efficiency ◽

Yield Responses

Common bean is an important crop, consumed as green-shelled bean in several countries. In Chile, green-shelled beans are cultivated often as a dry land crop, vulnerable to drought. The objective of this study was to characterize the hydric and productive responses of four green-shelled bean genotypes subjected to deficit irrigation in order to outline production strategies in the face of increasing water scarcity. Two experiments were evaluated: one pot experiment with three irrigation treatments, supplying 100% of the crop evapotranspiration (ETc) (T100), 50% (T50), and 30% (T30); and an open field experiment with two treatments: 100% (I100) and 40% of ETc (I40). Treatments were applied during reproductive stage in determinate cultivars and vegetative stage in indeterminate plants. Severe water restriction (T30 and I40) in both experiments showed a significant decrease in stomatal conductances, as well as biomass and number of grains per pod; I40 treatment also showed a reduction in chlorophyll fluorescence. Water use efficiency (WUE) was higher under water stress in field (I40), but lower on the T30 treatment from the pot experiment. Determinate cultivars showed 22.7% higher of 100-seed weight compared to indeterminate type, and, thus, higher tolerance to drought. Our results indicate that severe water stress is highly harmful in terms of yield, and a moderate controlled deficit irrigation plus the use of determinate genotypes may be a strategy for producing green-shelled bean successfully under a drought scenario.

Download Full-text

Promotion of Growth and Physiological Characteristics in Water-Stressed Triticum aestivum in Relation to Foliar-Application of Salicylic Acid

Water ◽

10.3390/w13091316 ◽

2021 ◽

Vol 13 (9) ◽

pp. 1316

Author(s):

Abida Parveen ◽

Muhammad Arslan Ashraf ◽

Iqbal Hussain ◽

Shagufta Perveen ◽

Rizwan Rasheed ◽

...

Keyword(s):

Ascorbic Acid ◽

Salicylic Acid ◽

Antioxidant Enzymes ◽

Water Stress ◽

Photosynthetic Pigments ◽

Foliar Spray ◽

Field Capacity ◽

Available Water ◽

Drought Tolerant ◽

Growth Attributes

The present work reports the assessment of the effectiveness of a foliar-spray of salicylic acid (SA) on growth attributes, biochemical characteristics, antioxidant activities and osmolytes accumulation in wheat grown under control (100% field capacity) and water stressed (60% field capacity) conditions. The total available water (TAW), calculated for a rooting depth of 1.65 m was 8.45 inches and readily available water (RAW), considering a depletion factor of 0.55, was 4.65 inches. The water contents corresponding to 100 and 60% field capacity were 5.70 and 1.66 inches, respectively. For this purpose, seeds of two wheat cultivars (Fsd-2008 and S-24) were grown in pots subjected to water stress. Water stress at 60% field capacity markedly reduced the growth attributes, photosynthetic pigments, total soluble proteins (TSP) and total phenolic contents (TPC) compared with control. However, cv. Fsd-2008 was recorded as strongly drought-tolerant and performed better compared to cv. S-24, which was moderately drought tolerant. However, water stress enhanced the contents of malondialdehyde (MDA), hydrogen peroxide (H2O2) and membrane electrolyte leakage (EL) and modulated the activities of antioxidant enzymes (superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as accumulation of ascorbic acid (AsA), proline (Pro) and glycine betaine (GB) contents. Foliar-spray with salicylic acid (SA; 0, 3 mM and 6 mM) effectively mitigated the adverse effects of water stress on both cultivars. SA application at 6 mM enhanced the shoot and root length, as well as their fresh and dry weights, and improved photosynthetic pigments. SA foliage application further enhanced the activities of antioxidant enzymes (SOD, POD, and CAT) and nonenzymatic antioxidants such as ascorbic acid and phenolics contents. However, foliar-spray of SA reduced MDA, H2O2 and membrane permeability in both cultivars under stress conditions. The results of the present study suggest that foliar-spray of salicylic acid was effective in increasing the tolerance of wheat plants under drought stress in terms of growth attributes, antioxidant defense mechanisms, accumulation of osmolytes, and by reducing membrane lipid peroxidation.

Download Full-text

Effect of water stress on some enzymes of nitrogen metabolism in pigeonpea

Phytochemistry ◽

10.1016/0031-9422(81)85265-x ◽

1981 ◽

Vol 20 (12) ◽

pp. 2675-2677 ◽

Cited By ~ 21

Author(s):

I.S. Sheoran ◽

Y.P. Luthra ◽

M.S. Kuhad ◽

Randhir Singh

Keyword(s):

Water Stress ◽

Nitrogen Metabolism ◽

Effect Of Water

Download Full-text

Effects of composted oil palm bunch wastes and chemical fertilizer on growth of oil palm seedling under water stress condition

Agro-Science ◽

10.4314/as.v12i1.3 ◽

2015 ◽

Vol 12 (1) ◽

pp. 17

Author(s):

S Ovie ◽

GU Nnaji ◽

PO Oviasogie ◽

PE Osayande ◽

P Irhemu

Keyword(s):

Water Stress ◽

Oil Palm ◽

Stress Condition ◽

Chemical Fertilizer ◽

Water Stress Condition ◽

Palm Bunch

Download Full-text

Competition between drought-tolerant upland rice cultivars and weeds under water stress condition

Planta Daninha ◽

10.1590/s0100-83582013000200006 ◽

2013 ◽

Vol 31 (2) ◽

pp. 291-302 ◽

Cited By ~ 5

Author(s):

F.B. Cerqueira ◽

E.A.L. Erasmo ◽

J.I.C. Silva ◽

T.V. Nunes ◽

G.P. Carvalho ◽

...

Keyword(s):

Water Stress ◽

Leaf Area ◽

Stress Condition ◽

Upland Rice ◽

Total Concentration ◽

Dry Weight ◽

Rice Cultivars ◽

Drought Tolerant ◽

Water Stress Condition ◽

Water Conditions

The objective of this study was to evaluate the competitiveness of two cultivars of upland rice drought-tolerant, cultured in coexistence with weed S. verticillata, under conditions of absence and presence of water stress. The experiment was conducted in a greenhouse at the Experimental Station of the Universidade Federal de Tocantins, Gurupi-TO Campus. The experimental design was completely randomized in a factorial 2 x 2 x 4 with four replications. The treatments consisted of two rice cultivars under two water conditions and four densities. At 57 days after emergence, were evaluated in rice cultivars and weed S. verticillata leaf area, dry weight of roots and shoots and total concentration and depth of roots. Was also evaluated in rice cultivars, plant height and number of tillers. Water stress caused a reduction in leaf area, the concentration of roots and vegetative components of dry matter (APDM, and MSR MST) of rice cultivars and Jatoba Catetão and weed S. verticillata. The competition established by the presence of the weed provided reduction of all vegetative components (MSPA, and MSR MST) of cultivars and Jatoba Catetão. It also decreased the number of tillers, the concentration of roots and leaf area. At the highest level of weed competition with rice cultivars, a greater decrease in vegetative components and leaf area of culture, regardless of water conditions.

Download Full-text

Federal/State Responsibility for Child Welfare Services

Children Australia ◽

10.1017/s0312897000007876 ◽

1984 ◽

Vol 9 (2) ◽

pp. 26-27

Author(s):

Susan M. Griffin

Keyword(s):

Child Welfare ◽

State Government ◽

Family Policy ◽

Federal State ◽

Final Report ◽

Raising Children ◽

Rights Of The Child ◽

The Family ◽

Major Review ◽

Set Up

In Victoria at the present time a major review is being undertaken into child welfare practice and legislation. The importance of this task is two-fold. Not only do children have to gain from a sensitive and workable final Report, but families too could find that they will be offered the support they need to assist in the difficult task of raising children today. It is hoped that the Review Committee will not concentrate solely on the rights of the child, but will also give due recognition to the rights of the family to a caring and protective environment.The Victorian Government was the first state government to adopt a family policy approach to dealing with the child. This was confirmed by the Norgard Report (1976) and formed the basis of a submission by the Victorian Minister of Social Welfare to the Federal Minister of Social Security (1977) which culminated in the Family Support Services Scheme being set up the following year. This joint federal/state program officially recognised the interaction of children’s rights and needs with those of their parents.

Download Full-text