Roles of Gibberellin and Auxin in Promoting Seed Germination and Seedling Vigor in Pinus massoniana

Zhao, Guangyao; Jiang, Xuwen

doi:10.5849/forsci.12-143

Cited by 41 publications

(20 citation statements)

References 26 publications

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“…In general, results confirm that the positive effect of biochar on the germination performance of wheat varieties is due to an increase in GA synthesis, ABA and 3-IAA concentrations were significantly lower than those of GA. It is known that the stimulatory role of gibberellins (GA) in cereal grain have an interactive inhibitory effect on ABA transactivation activity, while the same does not affect GA activity [26,27]. These results demonstrate that, at a molecular level, the biochar soil amendment was able to markedly improve GA content of wheat seeds, thereby increasing their germination ability.…”

Section: Effect Of Biochar On the Hormone Content Of Svevo And Saragomentioning

confidence: 65%

Response of Ancient and Modern Wheat Varieties to Biochar Application: Effect on Hormone and Gene Expression Involved in Germination and Growth

et al. 2019

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Agriculture has changed dramatically due to mechanization, new technologies, and the increased use of chemical fertilizers. These factors maximize production and reduce food prices, but may also enhance soil degradation. Sustainable agricultural practices include altering crop varieties and the use of soil amendments to increase production, improve irrigation, and more effectively use fertilizers. Ancient and modern durum wheat varieties have been shown to be tolerant to conditions caused by climate change and increase production. Biochar soil amendments have been reported to increase crop yields, soil fertility, and to promote plant growth. However, results are variable depending on biomass source, application conditions, and crop species. This study evaluates the crop response of two contrasting durum wheat varieties on an Eutric Cambisol amended with beech wood biochar. Wheat varieties used are Saragolla, an ancient variety traditionally used in Southern Italy, and Svevo, a widely used commercial variety. The effect of biochar soil amendment on the expression of genes involved in the germination of these two varieties of wheat was determined using RT-PCR. The content of hormones such as gibberellins (GAs), auxins (IAA), and abscisic acid (ABA) was determined. Results demonstrate that biochar had a stimulatory effect on the growth performances of Svevo and Saragolla cultivars at the molecular level. This correlated to the promoted transcription of genes involved in the control of plant development. Overall, the presence of biochar as soil amendment improved the germination rates of both varieties, but the ancient wheat cultivar was better suited to the Eutric Cambisol than the commercial variety. This trend was also observed in un-amended pots, which may indicate better adaptability of the ancient wheat cultivar to withstand environmental stress than the commercial variety.

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Section: Effect Of Biochar On the Hormone Content Of Svevo And Saragomentioning

confidence: 65%

Response of Ancient and Modern Wheat Varieties to Biochar Application: Effect on Hormone and Gene Expression Involved in Germination and Growth

et al. 2019

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“…GAs are used as important seed priming agents to mitigate abiotic stresses in different crops ( Table 2 ). Guangwu and Xuwen [ 76 ] reported that GAs (5 × 10 −5 M) promoted seed respiration and lowered the ABA level and stimulated IAAs and GAs biosynthesis. In addition, wheat seeds treated with GA 3 (100 mg L −1 , 150 mg L −1 , and 200 mg L −1 ) exhibited a decrease in the concentration of polyamines, ABA, and Na + and an increase in the concentration of Ca 2+ and K + [ 23 ].…”

Section: Commonly Used Pgrs In Seed Primingmentioning

confidence: 99%

Seed Priming with Phytohormones: An Effective Approach for the Mitigation of Abiotic Stress

Rhaman

Imran

Rauf

et al. 2020

Plants

189

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Plants are often exposed to abiotic stresses such as drought, salinity, heat, cold, and heavy metals that induce complex responses, which result in reduced growth as well as crop yield. Phytohormones are well known for their regulatory role in plant growth and development, and they serve as important chemical messengers, allowing plants to function during exposure to various stresses. Seed priming is a physiological technique involving seed hydration and drying to improve metabolic processes prior to germination, thereby increasing the percentage and rate of germination and improving seedling growth and crop yield under normal and various biotic and abiotic stresses. Seed priming allows plants to obtain an enhanced capacity for rapidly and effectively combating different stresses. Thus, seed priming with phytohormones has emerged as an important tool for mitigating the effects of abiotic stress. Therefore, this review discusses the potential role of priming with phytohormones to mitigate the harmful effects of abiotic stresses, possible mechanisms for how mitigation is accomplished, and roles of priming on the enhancement of crop production.

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“…By contrast, using fluorophore technology in a gas-phase medium is likely to lead to faster processing times and avoid technical issues, such as floating tissues and air-pockets. To date, automated gas-phase measurements of O 2 consumption using fluorophore techniques for plants have primarily focused on large-scale analysis of seed germination [ 56 , 57 ], with automated, high-throughput assessments of non-seed plant R yet to be attempted using gas-phase fluorophore approaches.…”

Section: Introductionmentioning

confidence: 99%

The combination of gas-phase fluorophore technology and automation to enable high-throughput analysis of plant respiration

et al. 2017

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BackgroundMitochondrial respiration in the dark (R dark) is a critical plant physiological process, and hence a reliable, efficient and high-throughput method of measuring variation in rates of R dark is essential for agronomic and ecological studies. However, currently methods used to measure R dark in plant tissues are typically low throughput. We assessed a high-throughput automated fluorophore system of detecting multiple O2 consumption rates. The fluorophore technique was compared with O2-electrodes, infrared gas analysers (IRGA), and membrane inlet mass spectrometry, to determine accuracy and speed of detecting respiratory fluxes.ResultsThe high-throughput fluorophore system provided stable measurements of R dark in detached leaf and root tissues over many hours. High-throughput potential was evident in that the fluorophore system was 10 to 26-fold faster per sample measurement than other conventional methods. The versatility of the technique was evident in its enabling: (1) rapid screening of R dark in 138 genotypes of wheat; and, (2) quantification of rarely-assessed whole-plant R dark through dissection and simultaneous measurements of above- and below-ground organs.DiscussionVariation in absolute R dark was observed between techniques, likely due to variation in sample conditions (i.e. liquid vs. gas-phase, open vs. closed systems), indicating that comparisons between studies using different measuring apparatus may not be feasible. However, the high-throughput protocol we present provided similar values of R dark to the most commonly used IRGA instrument currently employed by plant scientists. Together with the greater than tenfold increase in sample processing speed, we conclude that the high-throughput protocol enables reliable, stable and reproducible measurements of R dark on multiple samples simultaneously, irrespective of plant or tissue type.Electronic supplementary materialThe online version of this article (doi:10.1186/s13007-017-0169-3) contains supplementary material, which is available to authorized users.

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Roles of Gibberellin and Auxin in Promoting Seed Germination and Seedling Vigor in Pinus massoniana

Cited by 41 publications

References 26 publications

Response of Ancient and Modern Wheat Varieties to Biochar Application: Effect on Hormone and Gene Expression Involved in Germination and Growth

Response of Ancient and Modern Wheat Varieties to Biochar Application: Effect on Hormone and Gene Expression Involved in Germination and Growth

Seed Priming with Phytohormones: An Effective Approach for the Mitigation of Abiotic Stress

The combination of gas-phase fluorophore technology and automation to enable high-throughput analysis of plant respiration

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