scholarly journals Exogenous Application of Abscisic Acid, Putrescine, or 2,4-Epibrassinolide at Appropriate Concentrations Effectively Alleviate Damage to Tomato Seedlings from Suboptimal Temperature Stress

2012 ◽  
Vol 22 (1) ◽  
pp. 137-144 ◽  
Author(s):  
Weijie Jiang ◽  
Jie Bai ◽  
Xueyong Yang ◽  
Hongjun Yu ◽  
Yanpeng Liu
Keyword(s):  
Abscisic Acid ◽  
Temperature Stress ◽  
Soluble Sugar ◽  
Protective Effects ◽  
Triphenyltetrazolium Chloride ◽  
Tomato Production ◽  
Suboptimal Temperature ◽  
Exogenous Application ◽  
Tomato Seedlings ◽  
Tomato Cultivars

The application of plant growth regulators (PGRs), such as abscisic acid (ABA), putrescine (Put), and 2,4-epibrassinolide (EBR), has been shown to enhance a plant's resistance to various abiotic stresses. However, the protective effects of these PGRs on tomato (Solanum lycopersicum) seedlings under suboptimal temperature stress have not yet been evaluated. We also do not know the most effective method of application of PGRs for various tomato cultivars. We studied the effects of three rates of exogenous ABA, Put, or EBR in limiting damage from suboptimal temperature stress on two tomato cultivars, Zhongshu6 (considered sensitive to suboptimal temperatures) and SANTIAM (considered tolerant to suboptimal temperatures). Results showed that application of these PGRs at appropriate concentrations could effectively reduce the decline in the net photosynthetic rate (Pn) and the chlorophyll (Chl) content in leaves caused by suboptimal temperature stress in both ‘Zhongshu6’ and ‘SANTIAM’ and could promote an increase in organic osmolyte (proline and soluble sugar) contents and root 2,3,5-triphenyltetrazolium chloride (TTC)-reducing activity for ‘Zhongshu6’. However, these effects were inferior on ‘SANTIAM’. For both cultivars, the best treatment concentrations are 1 mm ABA, 0.1 mm Put, or 0.02 μM EBR. Results indicate that in tomato production, exogenous application of ABA, Put, or EBR at appropriate concentrations can effectively limit damage from suboptimal temperature stress.

scholarly journals Transcriptome analysis reveals the main metabolic pathway of c-GMP induced by salt stress in tomato seedlings

2020 ◽  
Author(s):  
Xiaolin Zhu ◽  
Meifei Su ◽  
Xiaohong Wei ◽  
Yu Long ◽  
Baoqiang Wang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Growth And Development ◽  
Molecular Mechanisms ◽  
Lignin Content ◽  
Soluble Sugar ◽  
Guanosine Monophosphate ◽  
High Yield ◽  
Salt Adaptation ◽  
Tomato Production ◽  
Tomato Seedlings

AbstractTomato is a model crop, as well as important food worldwide. In the arid areas, aggravation of soil salinity has become the primary problem that threatens the high yield in tomato production. As a second messenger substance, cyclic guanosine monophosphate (c-GMP) plays an indispensable role in plant response to salt stress through regulating cell processes to promote plant growth and development. However, this mechanism has not been fully explored in tomato seedlings. In this experiment, the tomato seeds were cultured in distilled water (CK), 20 μM c-GMP (T1), 50 mM NaCl (T2), 20 μM c-GMP + 50 mM NaCl (T3). The results show that 20 μM c-GMP effectively alleviated the inhibition of 50 mM NaCl on tomato growth and development, inducing the expression of 1580 DEGs. 95 DEGs were up-regulated and 442 DEGs were down-regulated (CK vs T1), whereas in the T2 vs T3 comparison 271 DEGs were up-regulated and 772 DEGs were down-regulated. Based on KEGG analysis, the majority of DEGs were involved in metabolism; exogenous c-GMP induced significant enrichment of pathways associated with carbohydrates, phenylpropanoids and fatty acid metabolism. Most PMEs, acCoA, PAL, PODs, FADs, and AD were up-regulated, and GAPDHs, PL, PG, BXL4, and β-G were down-regulated, which reduced susceptibility of tomato seedlings to salt and promoted their salt adaptation. The application of c-GMP promoted soluble sugar, flavonoids and lignin content, reduced accumulation of MDA, and enhanced the activity of POD. Thus, our results provide insights into the molecular mechanisms associated with salt tolerance of tomato seedlings.

scholarly journals Exogenous abscisic acid alleviates the toxicity of nickel in wheat seedlings

2021 ◽  
Vol 293 ◽  
pp. 03023
Author(s):  
Xue Li ◽  
Ming Zhang ◽  
Tian-peng Gao
Keyword(s):  
Adverse Effect ◽  
Antioxidant Enzymes ◽  
Abscisic Acid ◽  
Plant Growth ◽  
Superoxide Anion ◽  
Antioxidant Defense ◽  
Soluble Sugar ◽  
Oxidative Injury ◽  
Wheat Seedlings ◽  
Exogenous Application

In order to evaluate the effects of exogenous abscisic acid (ABA) in alleviating nickel (Ni) stress in wheat plants. We studied the changes of biochemical and physiological in wheat seedlings exposed to 250 μM Ni with or without different treatments of ABA. Exposed to Ni (250 μM) caused adverse effect on growth of wheat seedlings, which was accompanied by increased the concentrations of superoxide anion（O2−） and malondialdehyde (MDA). However, exogenous application of ABA (2.5 and 5 μM) alleviated the Ni-induced inhibition of plant growth, decreased the concentrations of O2− and MDA in wheat shoots. Further, application of ABA significantly modulated the activities of antioxidant enzymes and enhanced content of proline and soluble sugar in Ni-stressed wheats, but the application of 20 μM of ABA had no different significantly response for these parameters. The results indicated that application of ABA enhanced the antioxidant defense activities in Ni-stressed wheats, thus alleviating Ni-induced oxidative injury and enhancing Ni tolerance.

scholarly journals Metabolomics Profiling of Brassinolide and Abscisic Acid In Response to High Temperature Stress

2021 ◽  
Author(s):  
Jinhua Lv ◽  
Tianyu Dong ◽  
Yanping Zhang ◽  
Yu Ku ◽  
Ting Zheng ◽  
...  
Keyword(s):  
Amino Acids ◽  
Abscisic Acid ◽  
High Temperature ◽  
Temperature Stress ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Middle Lamella ◽  
High Temperature Stress ◽  
Grape Quality ◽  
Temperature Damage

Abstract To determine the effect of abscisic acid (ABA), brassinolide (BR) and ABA+BR on grape quality under high temperature stress (HTS), various metabolites were analyzed. Compared with the control (CK), DL-tryptophan, D-raffinose, geniposidic acid, dodecanedioic acid and polyphenols were found to be higher after ABA treatment. After BR treatment, amino acids and poricoic acid B were higher than in CK. And carbohydrates and amino acids were upregulated after ABA+BR treatment. BR and ABA+BR treatment also induced higher endogenous ABA and epibrassinolide (EBR) contents. In addition, treated grape had higher soluble solid concentrations (SSC) and soluble sugar content, and delayed the degradation of middle lamella and microfibrils. Antioxidant and heat shock related genes were examined, which significantly increased in treated grape. The finding of this study suggested that ABA, BR and ABA+BR are very useful for alleviating high temperature damage by increasing the accumulation of osmotic adjustment substances, and endogenous hormones content.

Biostimulants alleviate temperature stress in tomato seedlings

2022 ◽  
Vol 293 ◽  
pp. 110712
Author(s):  
Chenxu Niu ◽  
Ge Wang ◽  
Jing Sui ◽  
Genzhong Liu ◽  
Fangfang Ma ◽  
...  
Keyword(s):  
Temperature Stress ◽  
Tomato Seedlings

scholarly journals Effects of Abscisic Acid on High-Temperature Stress Injury in Cucumber

1994 ◽  
Vol 63 (2) ◽  
pp. 393-399 ◽  
Author(s):  
Masayuki Oda ◽  
Dissanayake M Thilakaratne ◽  
Zhi Jun Li ◽  
Hidekazu Sasaki
Keyword(s):  
Abscisic Acid ◽  
High Temperature ◽  
Temperature Stress ◽  
High Temperature Stress ◽  
Stress Injury

scholarly journals Morphological, Leaf Nutrient, and Fruit Quality Characteristics of Diverse Tomato Cultivars under Organic Low-Input Management

2021 ◽  
Vol 13 (21) ◽  
pp. 12326
Author(s):  
Leangsrun Chea ◽  
Cut Erika ◽  
Marcel Naumann ◽  
Inga Smit ◽  
Bernd Horneburg ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Plant Morphology ◽  
Quality Characteristics ◽  
Fruit Yield ◽  
Soluble Solids ◽  
Mineral Concentration ◽  
Tomato Production ◽  
Low Input ◽  
Yield And Quality ◽  
Tomato Cultivars

Increasing fruit yield and quality of tomatoes under organic low-input conditions remains a challenge for producers and breeders. Therefore, it is necessary to identify superior tomato cultivars that are suitable for production and use as parents in breeding programmes. In the present study, the variations in plant morphology and fruit quality characteristics of tomato cultivars were assessed to reveal the traits associated with improved yield and fruit quality. Sixty diverse tomato cultivars were screened in 2015, and in 2016, a subset of 20 cultivars was selected for further evaluation under organic low-input conditions. The results showed high variability among cultivars in all 28 traits that were observed. Salad cultivars had lower plant growth and fruit quality (minerals, dry matter, total soluble solids, and total phenolics) by 10–70%, but they displayed 10–60% higher fruit yield and leaf minerals than cocktail cultivars. Salad tomato cultivars with superior yield and harvest index were mainly derived from breeding for intensive indoor production. Cocktail cultivars with superior yield were mainly derived from organic and outdoor breeding programs. There was a trade-off between fruit yield and quality, indicating a challenge for simultaneous improvement of yield and quality. The importance of Mg was highlighted because of its contribution to the fruit mineral concentration and fruit quality. Cultivars superior in one trait or trait combination under organic low-input conditions were identified to be used by producers and breeders as superior cultivars to meet their production targets and breeding objectives. The importance of Mg provides a novel path for further research on improving soil-available Mg in organic tomato production to enhance fruit mineral concentration and fruit quality in general.

Abscisic acid prevents pollen abortion under high-temperature stress by mediating sugar metabolism in rice spikelets

2018 ◽  
Vol 165 (3) ◽  
pp. 644-663 ◽  
Author(s):  
Islam Md. Rezaul ◽  
Feng Baohua ◽  
Chen Tingting ◽  
Fu Weimeng ◽  
Zhang Caixia ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
High Temperature ◽  
Temperature Stress ◽  
Sugar Metabolism ◽  
High Temperature Stress ◽  
Pollen Abortion
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