Effect of low-temperature stress and gibberellin on seed germination and seed-ling physiological responses in peanut

Chang, Bowen; Peng, Zhong; Liu, Jie; Zhong-hua, Tang; Gao, Y. Z.; Yu, Hui; Guo, Wei

doi:10.3724/sp.j.1006.2019.84043

Cited by 13 publications

(6 citation statements)

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“…That means the bud growth of rapeseed was more sensitive to the temperature changing than seed germination. The result was consistent with previous studies of other crops (Chang et al, 2019;Zhang et al, 2020). In addition, 8 varieties were more sensitive to 8℃ at germination stage, which was consistent with previous study (Zhu et al, 2019).…”

Section: Discussionsupporting

confidence: 94%

Tibet The Seed Germination Characteristics Under Low Temperature and Spring Sowing Study of 8 Rapeseed Varieties

Zhu¹,

Zhou²,

Jiang³

et al. 2021

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To explore the low temperature germination characteristics of rapeseed, 8 main cultivars were selected for germination experiments in incubators at 20℃, 16℃, 12℃ and 8℃, respectively, to measure and analyze the germination potential, germination rate, root length, bud length, etc. The results showed that there was significant difference in the germination potential of tested rapeseeds at temperatures. And the low temperature of 8℃ was significantly reduced the germination potential. With the decrease of germination temperature, the growth of roots and buds were inhibited significantly. There were significant differences both in temperatures and varieties. The germination potential, root length and bud length could be used as the main index to evaluate seed germination of rapeseed under low temperature. In addition, to screen varieties suitable for spring sowing as green manure, the spring sowing test was carried out. The study found that the fresh grass yield of "Huyouzao No.1" was 1712.53 kg/m 2 , which was much higher than other 7 varieties. Its relative root length was second only to "Huyou17" and its relative bud length next to "Huyoufei No.1" at 8℃, respectively. The results can provide a reference for early spring sowing of rapeseed as green manure.

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Section: Discussionsupporting

confidence: 94%

Tibet The Seed Germination Characteristics Under Low Temperature and Spring Sowing Study of 8 Rapeseed Varieties

Zhu¹,

Zhou²,

Jiang³

et al. 2021

mpb

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show abstract

“…However, the heat condition in northeast China is poor and the extreme climate events such as low temperature caused by global climate change occur frequently, severely restricting peanut growth, development, productivity, and geographical distribution in temperate and high-elevation areas ( Xiao and Song, 2011 ; Chen N. et al, 2014 ). Improper cold stress can increase the membrane permeability and membrane lipid peroxidation of peanut seedlings, resulting in electrolyte leakage (EL), excessive accumulation of reactive oxygen species (ROS), and substantial metabolic imbalance, especially involving respiration and photosynthesis ( Vincent et al, 2018 ; Chang et al, 2019 ). In addition to morphological and physiological changes, cold stress can also lead to a series of complex signal transduction and transcriptional rearrangements ( Zhang G. H. et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

An Advanced Lipid Metabolism System Revealed by Transcriptomic and Lipidomic Analyses Plays a Central Role in Peanut Cold Tolerance

et al. 2020

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Cold stress restricts peanut (Arachis hypogaea L.) growth, development, and yield. However, the specific mechanism of cold tolerance in peanut remains unknown. Here, the comparative physiological, transcriptomic, and lipidomic analyses of cold tolerant variety NH5 and cold sensitive variety FH18 at different time points of cold stress were conducted to fill this gap. Transcriptomic analysis revealed lipid metabolism including membrane lipid and fatty acid metabolism may be a significant contributor in peanut cold tolerance, and 59 cold-tolerant genes involved in lipid metabolism were identified. Lipidomic data corroborated the importance of membrane lipid remodeling and fatty acid unsaturation. It indicated that photosynthetic damage, resulted from the alteration in fluidity and integrity of photosynthetic membranes under cold stress, were mainly caused by markedly decreased monogalactosyldiacylglycerol (MGDG) levels and could be relieved by increased digalactosyldiacylglycerol (DGDG) and sulfoquinovosyldiacylglycerol (SQDG) levels. The upregulation of phosphatidate phosphatase (PAP1) and phosphatidate cytidylyltransferase (CDS1) inhibited the excessive accumulation of PA, thus may prevent the peroxidation of membrane lipids. In addition, fatty acid elongation and fatty acid boxidation were also worth further studied in peanut cold tolerance. Finally, we constructed a metabolic model for the regulatory mechanism of peanut cold tolerance, in which the advanced lipid metabolism system plays a central role. This study lays the foundation for deeply analyzing the molecular mechanism and realizing the genetic improvement of peanut cold tolerance.

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“…Soybean varieties that showed cold resistance during indoor germination also showed strong cold resistance in field emergence [52]. The study by Chang et al on eight peanut varieties showed that the germination-related indices such as germination rate in the low-temperature greenhouse test were consistent with the results of the field test under cold spring conditions [53]. The results of this experiment show that under the indoor artificial climate conditions, the genotypes with high comprehensive low-temperature stress tolerance index at the germination and emergence stages had higher low-temperature stress tolerance index of biomass and yield under the condition of late sowing.…”

Section: The Seed Characteristics Affected the Low-temperature Tolera...mentioning

confidence: 78%

Seed Characteristics Affect Low-Temperature Stress Tolerance Performance of Rapeseed (Brassica napus L.) during Seed Germination and Seedling Emergence Stages

et al. 2022

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Screening and breeding elite varieties with rapid germination and uniform seedling emergence under low temperature is an effective strategy to deal with the cold climate occurring under late sowing conditions in the Yangtze River basin. This study focused on the performance of seven functional traits, including percentage of germination, percentage of emergence, mean germination time, mean emergence time, total seedling length, total dry weight, and seedling vigor index of 436 natural rapeseed populations under normal-temperature (25/20 °C) and low-temperature (15/10 °C) conditions. Furthermore, ten genotypes were screened to verify their low-temperature tolerance based on cultivar traits in a pot experiment. The results show that the germination- and emergence-related functional traits of rapeseed genotypes exhibit rich genotypic diversity in response to low-temperature stress; the variation among these traits ranged from 1–25% under normal-temperature and 10–49% under low-temperature conditions. Variation in seed characteristics also affected the capacity for low-temperature tolerance in the process of seed germination and seedling emergence, and could explain 22% of the total variance for low-temperature stress tolerance indices. There existed high correlations between the stress tolerance index of total dry weight (STI_TDW) and thousand-seed weight, and between the stress tolerance index of emergence percentage (STI_PE) and oil content. The contents of erucic acid, glucosinolate, and eicosenoic acid were positively correlated with the stress tolerance index of mean germination time (STI_MGT) and mean emergence time (STI_MET). The D-CRITIC (distance-based intercriteria correlation) weight method was selected in this experiment to calculate each variety’s comprehensive low-temperature stress tolerance index by integrating the standard deviation and distance correlation coefficient of each index. The genotypes with large comprehensive low-temperature stress tolerance index also had higher low-temperature stress tolerance index of biomass and yield in the pot experiment, indicating that the comprehensive low-temperature stress tolerance index has high reliability and applicability. This study could provide a theoretical basis for the utilization of low-temperature-tolerant germplasm resources, as well as a reference for the cold resistance and yield stability under late- and direct-sowing conditions of rapeseed in the Yangtze River basin and other similar environments around the world.

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Effect of low-temperature stress and gibberellin on seed germination and seed-ling physiological responses in peanut

Cited by 13 publications

References 0 publications

Tibet The Seed Germination Characteristics Under Low Temperature and Spring Sowing Study of 8 Rapeseed Varieties

Tibet The Seed Germination Characteristics Under Low Temperature and Spring Sowing Study of 8 Rapeseed Varieties

An Advanced Lipid Metabolism System Revealed by Transcriptomic and Lipidomic Analyses Plays a Central Role in Peanut Cold Tolerance

Seed Characteristics Affect Low-Temperature Stress Tolerance Performance of Rapeseed (Brassica napus L.) during Seed Germination and Seedling Emergence Stages

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