Alleviation of water deficit in Physalis angulata plants by nitric oxide exogenous donor

Leite, Romeu da Silva; Nascimento, Marilza Neves do; Tanan, Tamara Torres; Neto, Lourival Palmeira Gonçalves; Ramos, Cristiane Amaral da Silva; Silva, Alismário Leite da

doi:10.1016/j.agwat.2019.02.001

Cited by 38 publications

(16 citation statements)

References 33 publications

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“…Each pot was weighed with an electronic scale twice a day to determine the amount of water evaporated, and the evaporated water plus water used by plants was re‐added following the gravimetric procedure outlined by da Silva Leite et al (2019). The soil holding water capacity of the pots were kept at 40 and 80% of the full water holding capacity for WS and WW plants, respectively, based on previous the results of an experiment done in pepper crop (Kaya et al 2019).…”

Section: Methodsmentioning

confidence: 99%

Nitrate reductase is required for salicylic acid‐induced water stress tolerance of pepper by upraising the AsA‐GSH pathway and glyoxalase system

Kaya

2020

Physiologia Plantarum

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A trial was conducted to evaluate whether nitrate reductase (NR) participates in salicylic acid (SA)-improved water stress (WS) tolerance in pepper (Capsicum annuum L.) plants. Before starting WS treatment, 0.5 mM SA was applied to half of the well-watered (WW) plants as well as to WS-plants as a foliar spray once a day for a week. The soil water holding capacity was maintained at 40 and 80% of the full water storing capacity for WS and and well-watered (WW) plants, respectively. Water stress caused substantial decreases in total plant dry weight, F v /F m , chlorophyll a and b, relative water content, leaf water potential (ΨI) by 53, 37, 49, 21, 36 and 33%, respectively relative to control, but significant increases in malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ), electrolyte leakage (EL), methylglyoxal (MG), proline, key antioxidant enzymes' activities, NO and NR activity. The SA reduced oxidative stress, but improved antioxidant defence system, ascorbate-glutathione (AsA-GSH) cycle enzymes, glyoxalase system-related enzymes, glyoxalase I (Gly I) and glyoxalase II (Gly II), plant growth, photosynthetic traits, NO, NR and proline. SA-induced WS tolerance was further improved by supplementation of sodium nitroprusside (SNP), a donor of NO. NR inhibitor, sodium tungstate (ST) was applied in conjunction with SA and SA + SNP to the WW and WS-plants to assess whether NR contributes to SA-improved WS tolerance. ST abolished the beneficial effects of SA by reducing NO and NR activity in WS-pepper, but the application of SNP along with SA + ST reversed negative effects of ST, showing that NO and NR are jointly needed for SA-induced WS tolerance of pepper plants.

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Section: Methodsmentioning

confidence: 99%

Nitrate reductase is required for salicylic acid‐induced water stress tolerance of pepper by upraising the AsA‐GSH pathway and glyoxalase system

Kaya

2020

Physiologia Plantarum

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“…Both NO donor and scavenger (100 μM) were sprayed singly on the leaves of plants 2 days before the plants were exposed to the salt stress. The dose selection of PTI and SNP was selected on the basis of previous studies ( Esringu et al, 2016 ; Gupta et al, 2017 ; da Silva Leite et al, 2019 ). The 2nd experiment was composed of the following treatments:…”

Section: Methodsmentioning

confidence: 99%

Ursolic Acid Limits Salt-Induced Oxidative Damage by Interfering With Nitric Oxide Production and Oxidative Defense Machinery in Rice

Long

Shou²,

Wang

et al. 2020

Front. Plant Sci.

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Crops frequently encounter abiotic stresses, and salinity is a prime factor that suppresses plant growth and crop productivity, globally. Ursolic acid (UA) is a potential signaling molecule that alters physiology and biochemical processes and activates the defense mechanism in numerous animal models; however, effects of UA in plants under stress conditions and the underlying mechanism of stress alleviation have not been explored yet. This study examined the effects of foliar application of UA (100 µM) to mitigate salt stress in three rice cultivars (HZ, 712, and HAY). A pot experiment was conducted in a climate-controlled greenhouse with different salt stress treatments. The results indicated that exposure to NaCl-induced salinity reduces growth of rice cultivars by damaging chlorophyll pigment and chloroplast, particularly at a higher stress level. Application of UA alleviated adverse effects of salinity by suppressing oxidative stress (H 2 O 2 , O 2−) and stimulating activities of enzymatic and non-enzymatic antioxidants (APX, CAT, POD, GR, GSH, AsA, proline, glycinebutane), as well as protecting cell membrane integrity (MDA, LOX, EL). Furthermore, UA application brought about a significant increase in the concentration of leaf nitric oxide (NO) by modulating the expression of NR and NOS enzymes. It seems that UA application also influenced Na + efflux and maintained a lower cytosolic Na + /K + ratio via concomitant upregulation of OsSOS1 and OsHKT1;5 in rice cultivars. The results of pharmacological tests have shown that supply of the NO scavenger (PTI) completely reversed the UA-induced salt tolerance in rice cultivars by quenching endogenous NO and triggering oxidative stress, Na + uptake, and lipid peroxidation. The PTI application with UA and sodium nitroprusside (SNP) also caused growth retardation and a significant increase in Na + uptake and oxidative stress in rice cultivars. This suggests that UA promoted salt tolerance of rice cultivars by triggering NO production and limiting toxic ion and reactive oxygen species (ROS) accumulation. These results revealed that both UA and NO are together required to develop a salt tolerance response in rice.

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“…NO donors are either supplemented to the roots in growth media or through fertigation [ 20 ], which is sprayed onto the plants’ leaves [ 21 ] with the aid of nanoparticles [ 22 , 23 ], or through a seed-priming agent [ 24 , 25 ]. The mechanisms of action of NO are yet to be fully revealed as it is highly dependent on various factors, such as plant species, age, size, source, concentration of NO donor, treatment duration, and methods of application [ 26 ]. For instance, application of 0.2 mmol/L SNP alleviated drought tolerance in wheat seedlings, whereas a concentration of SNP that was 10 times higher led to excessive generation of ROS and low antioxidant activities [ 27 ].…”

Section: Nitric Oxide: Backgroundmentioning

confidence: 99%

“…Drought stress adversely impacts plant growth and development at physiological, biochemical, and molecular levels. It disturbs the appearance of plants by causing chlorosis and necrosis signs [ 21 ]; prolongs the duration of primordia initiation; and reduces the number of shoots per explant, shoot length, leaf number, leaf area [ 51 ], fruit yield, and plant biomass [ 26 ]. Besides the aboveground plant parts, underground parts like roots also respond to drought by changing their root length to become either shorter [ 52 ] or longer for efficient uptake of soil moisture [ 51 ].…”

Section: No and Drought Stressmentioning

confidence: 99%

Plant Nitric Oxide Signaling under Drought Stress

Lau

Hamdan

Pua

et al. 2021

Plants

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Water deficit caused by drought is a significant threat to crop growth and production. Nitric oxide (NO), a water- and lipid-soluble free radical, plays an important role in cytoprotection. Apart from a few studies supporting the role of NO in drought responses, little is known about this pivotal molecular amendment in the regulation of abiotic stress signaling. In this review, we highlight the knowledge gaps in NO roles under drought stress and the technical challenges underlying NO detection and measurements, and we provide recommendations regarding potential avenues for future investigation. The modulation of NO production to alleviate abiotic stress disturbances in higher plants highlights the potential of genetic manipulation to influence NO metabolism as a tool with which plant fitness can be improved under adverse growth conditions.

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Alleviation of water deficit in Physalis angulata plants by nitric oxide exogenous donor

Cited by 38 publications

References 33 publications

Nitrate reductase is required for salicylic acid‐induced water stress tolerance of pepper by upraising the AsA‐GSH pathway and glyoxalase system

Nitrate reductase is required for salicylic acid‐induced water stress tolerance of pepper by upraising the AsA‐GSH pathway and glyoxalase system

Ursolic Acid Limits Salt-Induced Oxidative Damage by Interfering With Nitric Oxide Production and Oxidative Defense Machinery in Rice

Plant Nitric Oxide Signaling under Drought Stress

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