Drought stress mitigation with humic acid in two Cucumis melo L. genotypes differ in their drought tolerance

Kıran, Servinç; Furtana, Gökçen Baysal; Talhounı, M.; Ellialtıoğlu, Şeküre Şebnem

doi:10.1590/1678-4499.20190057

Cited by 25 publications

(21 citation statements)

References 26 publications

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“…One reason for pigment reduction during drought can br increasing abscisic acid and ethylene, chlorophyllase and peroxidase enzymes 14 . A decline of chlorophyll content was reported in melon 3,2,11 , and cucumber 15 . The GIR had the greatest decrease in photosynthetic pigments in most treatments, which probably is related to leaves being pale green in color during the dry season.…”

Section: Discussionmentioning

confidence: 93%

“…Shortage of water, which detrimentally reduces plant growth, is becoming more drastic as deserti cation increases worldwide 1 . Drought signi cantly affects vegetable production, disturbs plant water relationships, reduces leaf size, root growth and various physiological characteristics 2 . Melon (Cucumis melo L.) is an important vegetable cultivated in arid and semiarid areas of the world, and generally is moderately tolerant to water de cict 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Studies on effects of drought in melons have been done under eld and greenhouse conditions 2,3,11 , and none study has been conducted using in vitro screening selection in cucurbitaceae family and especially in C. melo by means of seed culture. Some studies were conducted in association with effects of osmotic materials by creation of in vitro and in vivo drought in other crops, but it has not been done on C. melo seedlings in tissue culture 6,7,9 . This study was undertaken to assess drought-tolerant melons using PEG or sorbitol in vitro with objectives of: 1) rapid and accurate identi cation of tolerant genotypes at 7 days after application of osmolytes; 2) use of one, or some, traits as indicators for identi cation of drought tolerant melons in tissue culture 3) to extend invitro screening for drought tolerance using landraces of melons with different water use e ciency; and 4) nally, comparison of sorbitol with PEG as drought simulators, while they are completely different structurally and chemically, and selection of better osmolyte.…”

Section: Introductionmentioning

confidence: 99%

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In Vitro Screening of Cucmis Melo L. Against Drought Mediated By PEG and Sorbitol

Mn¹,

Rasouli²,

Mt³

et al. 2021

Preprint

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Water deficit in first growth stages of melon (Cucumis melo L.) in formation of first true leaves after germination can be a factor limiting production. The first step for resolve the problem is genotypes evaluation and identification of drought tolerant melons. An effective method to achieve the goal is use of osmotic solution in tissue culture. Responses of Iranian melon landraces to drought was evaluated using sorbitol at 0.1, 0.2 and 0.4 M or polyethyleneglycol (PEG 6000) at 0.009, 0.012 and 0.015 M concentrations, and MS medium without treatment as the control. Coleoptile length, fresh and dry weight of shoots and roots, photosynthetic pigments, protein, proline, malondialdehyde (MDA) and antioxidant enzymes superoxide dismutase, guaiacol peroxidase and ascorbate peroxidase were measured. The PEG or sorbitol decreased coleoptile length, fresh weight and photosynthetic pigments, and led to enhancement of proline and MDA. Contents of protein and antioxidant enzymes was completely dependent on genotype and type and concentration of osmotic material. The in vitro culture for screening and identification of tolerant and sensitive drought genotypes could be rapid, useful and effective, with sorbitol mimicing drought better than PEG. After in vitro evaluation, the genotype responses to induced water deficit need to be confirmed under field conditions.

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Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In Vitro Screening of Cucmis Melo L. Against Drought Mediated By PEG and Sorbitol

Mn¹,

Rasouli²,

Mt³

et al. 2021

Preprint

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show abstract

“…The upregulation of drought stress tolerance genes, DREB2A , bZIP17 and HsfA6a is also modulated by HS application ( Alsamadany, 2022 ). Moreover, HS (e.g., derived from vermicompost) prevent drought and salinity-induced oxidative stress by enhancing antioxidant enzymes activities (SOD, CAT, Gr, and APX), and osmoprotectants (proline) that reduce ROS levels in several species (e.g., Oryza sativa , Saccharum officinarum , Cucumis melo , Setaria italica and Vigna radiata ) ( García et al., 2014 ; Aguiar et al., 2016 ; Kıran et al., 2019 ; Shen et al., 2020 ; Alsamadany, 2022 ). HA exerted a drought stress-protective effect in O. sativa through a signaling mechanism independent of ABA, regulating the expression of tonoplast aquaporin (TIPs) genes, putatively triggered by chemical and physical interactions between HA and the root system ( García et al., 2014 ).…”

Section: Mechanism Of Action Of Biostimulants For Mitigation Of Abiot...mentioning

confidence: 99%

Strategies and prospects for biostimulants to alleviate abiotic stress in plants

Freitas

Dias

2022

Front. Plant Sci.

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Global climate change-induced abiotic stresses (e.g., drought, salinity, extreme temperatures, heavy metals, and UV radiation) have destabilized the fragile agroecosystems and impaired plant performance and thereby reducing crop productivity and quality. Biostimulants, as a promising and eco-friendly approach, are widely used to address environmental concerns and fulfill the need for developing sustainable/modern agriculture. Current knowledge revealed that plant and animal derived stimulants (e.g., seaweeds and phytoextracts, humic substances, and protein hydrolysate) as well as microbial stimulants (e.g., plant beneficial bacteria or fungi) have great potential to elicit plant tolerance to various abiotic stresses and thus enhancing plant growth and performance-related parameters (such as root growth/diameter, flowering, nutrient use efficiency/translocation, soil water holding capacity, and microbial activity). However, to successfully implement biostimulant-based agriculture in the field under changing climate, the understanding of agricultural functions and action mechanism of biostimulants coping with various abiotic stresses at physicochemical, metabolic, and molecular levels is needed. Therefore, this review attempts to unravel the underlying mechanisms of action mediated by diverse biostimulants in relation to abiotic stress alleviation as well as to discuss the current challenges in their commercialization and implementation in agriculture under changing climate conditions.

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“…Increasing the addition of humic from 8 to 16 kg fed -1 improves the biochemical content as TAC increased by 18.4 to 23.23% respectively.The effect of humic substances in the alleviation of abiotic stress effects in plants is ascribed to the elevation in enzymatic and non-enzymatic antioxidants, formation of compatible solutes and changes in ionic balance. In various abiotic stresses, reactive oxygen species (ROS) are one of the significant causes responsible for cellular damage (Kıran, et al, 2019 andRehab et al, 2020). It may also enhance the foliar application of phosphorous (P) enhances leaf area index and plant biomass and reduces salinity-induced damages (Khan, et al, 2013).…”

Section: Total Antioxidant Activity Of Milletmentioning

confidence: 99%

Response of Pearl Millet to Fertilization by Mineral Phosphorus, Humic Acid and Mycorrhiza Under Calcareous Soils Conditions

Habib

2021

Egypt.J. Soil Sci.

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ertilizers are a costly input but continue to make a significant contribution to the production of additional food. To maximize benefits and minimize nutrient loss from fertilizer, it must be used in the right amount, source and combination at the right time using the suitable method. The experiment was carried out during the 2018/2019 summer season in Mariout, Desert Research Center Agricultural Experiment Station, southwest of Alexandria, Egypt to study the effect of the inoculation with Mycorrhizal (MF) fungi, Humic Acid (HA) applied to soil at levels (0, 8 and 16 kg fed -1 ) and phosphorous foliar application as phosphoric acid (H 3 PO 4 72.5% P 2 O 5 ) at rates of (0, 0.75 and 1.5 ml/ l) on the yield, yield components and chemical composition of pearl millet (Pennisetumgalaucum L.). Results revealed that inoculation of pearl millet by Mycorrhizae, combined with application humic acid (16 kg/fed) and phosphoric acid (1.5ml/l) was the most effective treatment in improving fresh and dry forage yield which recorded (80.9 and 21.3 ton/fed), respectively through the whole season and recorded the highest protein content which was 24.3% for the 3 rd cut compared with other cuts. The inoculation of pearl millet by Mycorrhizae, combined with application humic acid (16 kg/fed) was the most effective treatment in improving dry matter and starch 31.1and 23.7% respectively, as the mean for three cuts. Also, this treatment recorded the highest values of nitrogen as concentration and uptake 2.65% and 184.7 kg N/fed as soon as, phosphorus concentration and uptake values 0.46% and 32.9 kg P 2 O 5 /fed respectively, as the mean for three cuts in the dry forage of pearl millet.Regarding yield, there was an increase in forage yield and nutrient uptake, especially P and Nand total antioxidants. Increasing rates of humic and phosphoric acid addition with mycorrhizae treatments increased total antioxidant activity (TAA) of leaf. TAA recorded the highest in the H 2 and P 2 with inoculation about 796, 663 and 425 (µg AAE/mg ext.) in 1 st , 2 nd and 3 rd cuts respectively.These results indicated a marked improvement in the nutrient availability status of calcareous.

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Drought stress mitigation with humic acid in two Cucumis melo L. genotypes differ in their drought tolerance

Cited by 25 publications

References 26 publications

In Vitro Screening of Cucmis Melo L. Against Drought Mediated By PEG and Sorbitol

In Vitro Screening of Cucmis Melo L. Against Drought Mediated By PEG and Sorbitol

Strategies and prospects for biostimulants to alleviate abiotic stress in plants

Response of Pearl Millet to Fertilization by Mineral Phosphorus, Humic Acid and Mycorrhiza Under Calcareous Soils Conditions

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