Boron-induced improvement in physiological, biochemical and growth attributes in sunflower (<i>Helianthus annuus</i>L.) exposed to terminal drought stress

Shehzad, Muhammad; Maqsood, Muhammad; Nawaz, Fahim; Abbas, Tasawer; Yasin, Sanaullah

doi:10.1080/01904167.2018.1431663

Cited by 15 publications

(8 citation statements)

References 28 publications

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“…Global losses of rice yield due to E . crusgalli competition (by removing up to 80% of the available soil N 2 ), are estimated to be approximatelty 35% [36]. The high level of nitrate accumulation is harmful to livestock.…”

Section: Resultsmentioning

confidence: 99%

“…Drought stress reduces the efficiency of N 2 fertilization, significantly decreasing plant height, total leaf area, root and shoot dry biomass, dry matter accumulation, and yield [28,45]. Terminal drought stress (drought at the reproductive growth stage) substantially reduces growth performance in terms of reduced leaf area index, crop growth rate, net assimilation rate, and total dry matter production [36]. Other stressors such as salinity and salicylic acid can influence the response of plants to herbicides by regulating physiological and biochemical reactions [41,46].…”

Section: Resultsmentioning

confidence: 99%

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Effects of drought-stress on seed germination and growth physiology of quinclorac-resistant Echinochloa crusgalli

Fang

Yang

et al. 2019

PLoS ONE

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Echinochloa crusgalli (L.) Beauv. (barnyard grass) is considered a noxious weed worldwide, and is the most pernicious weed decreasing rice yields in China. Recently, E . crusgalli has evolved quinclorac resistance, making it among the most serious herbicide resistant weeds in China. The present study explored differences in germination and growth between quinclorac-resistant and -susceptible E . crusgalli collected in Hunan Province. The order of the seven E . crusgalli biotypes assessed, from high to low quinclorac-resistance, was: quinclorac-resistant, Chunhua, Hanshou, Shimen, Hekou, Dingcheng, and quinclorac-susceptible. With an increased in the level of quinclorac-resistance, the germination rate, length of young shoots and roots, and fresh weight of E . crusgalli were all decreased compared with that in more susceptible biotypes. However, there were no significant differences between quinclorac-resistant and susceptible E . crusgalli biotypes without polyethylene glycol 6000 treatment. Drought had a more obvious effect on glutathione S-transferases (GST) activity, determined by spectrophotometric method, in quinclorac-resistant E . crusgalli . Higher resistance level biotypes showed greater activity, and when treated with polyethylene glycol 6000 for 3 days, all E . crusgalli biotypes showed the highest GST activity. This study demonstrated that as the level of quinclorac-resistance increased, the rate of seed germination decreased, while the growth of young buds, young roots, and fresh weight decreased. Increased quinclorac-resistance may be related to the increased metabolic activity of GST in E . crusgalli .

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effects of drought-stress on seed germination and growth physiology of quinclorac-resistant Echinochloa crusgalli

Fang

Yang

et al. 2019

PLoS ONE

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“…Previously, Chen et al [ 43 ] reported that boron and silicon interaction augmented chlorophyll and carotenoids levels in rice and led to improved growth attributes under heavy metals stress. Similarly, an enhanced level of chlorophyll and carotenoids with a significant growth rate was also observed by applying B to sunflower, wheat, and cotton exposed to drought and salinity, respectively [ 57 , 58 , 59 ].…”

Section: Discussionmentioning

confidence: 98%

Silicon- and Boron-Induced Physio-Biochemical Alteration and Organic Acid Regulation Mitigates Aluminum Phytotoxicity in Date Palm Seedlings

et al. 2022

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The current study aimed to understand the synergistic impacts of silicon (Si; 1.0 mM) and boron (B; 10 µM) application on modulating physio-molecular responses of date palm to mitigate aluminum (Al3+; 2.0 mM) toxicity. Results revealed that compared to sole Si and B treatments, a combined application significantly improved plant growth, biomass, and photosynthetic pigments during Al toxicity. Interestingly, Si and B resulted in significantly higher exudation of organic acid (malic acids, citric acids, and acetic acid) in the plant’s rhizosphere. This is also correlated with the reduced accumulation and translocation of Al in roots (60%) and shoots (56%) in Si and B treatments during Al toxicity compared to in sole Al3+ treatment. The activation of organic acids by combined Si + B application has significantly regulated the ALMT1, ALMT2 and plasma membrane ATPase; PMMA1 and PMMA3 in roots and shoots. Further, the Si-related transporter Lsi2 gene was upregulated by Si + B application under Al toxicity. This was also validated by the higher uptake and translocation of Si in plants. Al-induced oxidative stress was significantly counteracted by exhibiting lower malondialdehyde and superoxide production in Si + B treatments. Experiencing less oxidative stress was evident from upregulation of CAT and Cyt-Cu/Zn SOD expression; hence, enzymatic activities such as polyphenol oxidase, catalase, peroxidase, and ascorbate peroxidase were significantly activated. In the case of endogenous phytohormones, Si + B application demonstrated the downregulation of the abscisic acid (ABA; NCED1 and NCED6) and salicylic acid (SA; PYL4, PYR1) biosynthesis-related genes. Consequently, we also noticed a lower accumulation of ABA and rising SA levels under Al-stress. The current findings illustrate that the synergistic Si + B application could be an effective strategy for date palm growth and productivity against Al stress and could be further extended in field trails in Al-contaminated fields.

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“…Drought prevalence in plants instigated by limited water supply causes severe reduction in leaf surface expansion by wilting and curling of leaves, membrane and chlorophyll degradation, and disruption of enzyme functions . More specifically, several cellular and metabolic processes such as stomatal conductance, RuBisCO enzyme activity, photosynthetic apparatus, photosynthetic CO 2 fixation and assimilation, nutrient uptake, and plant water status are negatively affected due to drought stress, consequently reducing the plant development seriously. , The drought stress in plants also disturbs the effective translocation of assimilates from source to sink that, further, limits the normal development of grains . Under mild to severe drought, overgeneration of reactive oxygen species (ROS) such as H 2 O 2 , O 2 – , and OH – due to imbalance between biochemical and photochemical functions predominantly causes peroxidation to nucleic acids, proteins, lipids, and cellular structures, thereby leading to electrolyte leakage and inhibiting photosynthetic efficiency in plants .…”

Section: Introductionmentioning

confidence: 99%

Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

Shafique Ahmad,

Shehzad,

Javid

et al. 2024

ACS Omega

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Drought is the worst environmental stress constraint that inflicts heavy losses to global food production, such as wheat. The metabolic responses of seeds produced overtransgenerational exposure to e[CO 2 ] to recover drought's effects on wheat are still unexplored. Seeds were produced constantly for four generations (F1 to F4) under ambient CO 2 (a[CO 2 ], 400 μmol L −1 ) and elevated CO 2 (e[CO 2 ], 800 μmol L −1 ) concentrations, and then further regrown under natural CO 2 conditions to investigate their effects on the stress memory metabolic processes liable for increasing drought resistance in the next generation (F5). At the anthesis stage, plants were subjected to normal (100% FC, field capacity) and drought stress (60% FC) conditions. Under drought stress, plants of transgenerational e[CO 2 ] exposed seeds showed markedly increased superoxide dismutase (16%), catalase (24%), peroxidase (9%), total antioxidants (14%), and proline (35%) levels that helped the plants to sustain normal growth through scavenging of hydrogen peroxide (11%) and malondialdehyde (26%). The carbohydrate metabolic enzymes such as aldolase (36%), phosphoglucomutase (12%), UDP-glucose pyrophosphorylase (25%), vacuolar invertase (33%), glucose-6-phosphate-dehydrogenase (68%), and cell wall invertase (17%) were decreased significantly; however, transgenerational seeds produced under e[CO 2 ] showed a considerable increase in their activities in drought-stressed wheat plants. Moreover, transgenerational e[CO 2 ] exposed seeds under drought stress caused a marked increase in leaf Ψ w (15%), chlorophyll a (19%), chlorophyll b (8%), carotenoids (12%), grain spike (16%), hundred grain weight (19%), and grain yield (10%). Hence, transgenerational seeds exposed to e[CO 2 ] upregulate the drought recovery metabolic processes to improve the grain yield of wheat under drought stress conditions.

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Boron-induced improvement in physiological, biochemical and growth attributes in sunflower (Helianthus annuusL.) exposed to terminal drought stress

Cited by 15 publications

References 28 publications

Effects of drought-stress on seed germination and growth physiology of quinclorac-resistant Echinochloa crusgalli

Effects of drought-stress on seed germination and growth physiology of quinclorac-resistant Echinochloa crusgalli

Silicon- and Boron-Induced Physio-Biochemical Alteration and Organic Acid Regulation Mitigates Aluminum Phytotoxicity in Date Palm Seedlings

Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

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Boron-induced improvement in physiological, biochemical and growth attributes in sunflower (Helianthus annuusL.) exposed to terminal drought stress

Cited by 15 publications

References 28 publications

Effects of drought-stress on seed germination and growth physiology of quinclorac-resistant Echinochloa crusgalli

Effects of drought-stress on seed germination and growth physiology of quinclorac-resistant Echinochloa crusgalli

Silicon- and Boron-Induced Physio-Biochemical Alteration and Organic Acid Regulation Mitigates Aluminum Phytotoxicity in Date Palm Seedlings

Transgenerational Seed Exposure to Elevated CO2 Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

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Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat