Enhancement in rice seed germination via improved respiratory metabolism under chilling stress

Liu, Hongyan; Zhang, Li; Wang, Weiqin

doi:10.1002/fes3.234

Cited by 23 publications

(24 citation statements)

References 39 publications

(80 reference statements)

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“…e SA, ASA, and CaCl 2 primed seed showed high germination percentages and low MGT under low temperature stress conditions, similar to the studies in rice [26,27], corn [12,15,28], and S. miltiorrhiza [29]. Salicylic acid is an antioxidant that inhibits oxidative reactions, helps regulate cell growth (cell enlargement and division), and activates amino acids and proteins [30] that help protect the cell structure [31].…”

Section: Discussionsupporting

confidence: 75%

Enhancement of Tainan 9 Peanut Seed Storability and Germination under Low Temperature

Jeammuangpuk

Promchote

Duangpatra

et al. 2020

International Journal of Agronomy

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Low temperature condition during December to January can limit seed emergence and seedling establishment for peanut production in Thailand. The objective of this study was to determine the effects of peanut seed priming on seed germination and vigor under optimal and low temperature conditions before and after 9 months of storage. Tainan 9 peanut seeds were primed with salicylic acid (SA), ascorbate (ASA), CaCl2, or chitosan and tested for germination at 25°C (optimal temperature) and 15°C (low temperature) before and after a 9-month storage period. Seed priming with 50 mg·L−1 SA and 50 mg·L−1 ASA for 12 hours before germinating improved germination at 15°C when compared to untreated seeds both before and after 9-month storage. The high seed quality, illustrated by high germination percentage, high seed vigor, and low mean germination time related to the low autoxidation substrates: lipoxygenase (LOX), malondialdehyde (MDA), and high antioxidants: superoxide dismutase (SOD) and catalase (CAT). It suggests that peanut seed priming with salicylic acid and/or ascorbate can improve seedling emergence and growth under low temperature conditions.

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Section: Discussionsupporting

confidence: 75%

Enhancement of Tainan 9 Peanut Seed Storability and Germination under Low Temperature

Jeammuangpuk

Promchote

Duangpatra

et al. 2020

International Journal of Agronomy

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“…In addition to starch degradation, several metabolic events were also reported to contribute to stronger chilling tolerance in primed seed. Our previous research found that the better germination ability in primed rice seed under chilling stress was associated with higher respiration rate (Wang et al 2016a ; b ), and such positive effect was attributed to the improved ATP levels, glycolysis metabolism and the repair and biogenesis of mitochondria in primed rice seeds (Nie et al 2020 ). Besides, the primed rice seeds obsessed lower MDA content and higher level of antioxidant capacity under abiotic stresses (Zheng et al 2016 ; Hussain et al 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…The treatments were No-priming-Normal Temperature (NT); No priming-Chilling Stress (CK); Se priming-Chilling stress (Se) and SA priming-Chilling stress (SA). Previously, several studies have shown that the rice seed germination and seedling growth would be severely inhibited when germinated under the temperature of 16–20 °C (Yoshida 1981; Sipaseuth et al 2007; Wang et al 2016a ; Nie et al 2020 ). Therefore, the temperature for chilling stress was set as 16 °C, and the temperature for normal temperature treatment was set as 25 °C.…”

Section: Methodsmentioning

confidence: 99%

“…Our previous studies also identified two seed priming treatments, viz. Selenium priming (Se) and Salicylic acid priming (SA), were effective in enhancing the seed germination and seedling growth attributes of rice under chilling stress (Wang et al 2016a ; Hussain et al 2016 ; Nie et al 2020 ). The mechanisms contributing to the enhanced stress tolerance in primed seeds includes improved respiratory metabolism (Corbineau et al 2000 ; Weitbrecht et al 2011 ; Nie et al 2020 ), stronger activity of reactive oxygen species scavenging system (Maia et al 2011 ; Chen and Arora 2013 ) and increased membrane integrity (Moosavi et al 2009 ; Patade et al 2009 ).…”

Section: Introductionmentioning

confidence: 99%

“…Selenium priming (Se) and Salicylic acid priming (SA), were effective in enhancing the seed germination and seedling growth attributes of rice under chilling stress (Wang et al 2016a ; Hussain et al 2016 ; Nie et al 2020 ). The mechanisms contributing to the enhanced stress tolerance in primed seeds includes improved respiratory metabolism (Corbineau et al 2000 ; Weitbrecht et al 2011 ; Nie et al 2020 ), stronger activity of reactive oxygen species scavenging system (Maia et al 2011 ; Chen and Arora 2013 ) and increased membrane integrity (Moosavi et al 2009 ; Patade et al 2009 ). In particular, several previous study and our researches have observed that seed priming enhanced the starch degradation process under chilling stress by increasing α-amylase activity and total soluble sugar content (Hussain et al 2016 ; Wang et al 2016a ; Wang et al 2016b ; Zheng et al 2016 ).…”

Section: Introductionmentioning

confidence: 99%

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Enhancement in Seed Priming-Induced Starch Degradation of Rice Seed Under Chilling Stress via GA-Mediated α-Amylase Expression

Song

Yin

Zhao

et al. 2022

Rice

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Chilling stress is the major abiotic stress that severely limited the seedling establishment of direct-seeded rice in temperate and sub-tropical rice production regions. While seed priming is an efficient pre-sowing seed treatment in enhancing crop establishment under abiotic stress. Our previous research has identified two seed priming treatments, selenium priming (Se) and salicylic priming (SA) that effectively improved the seed germination and seedling growth of rice under chilling stress. To further explore how seed priming enhance the starch degradation of rice seeds under chilling stress, the present study evaluated the effects of Se and SA priming on germination and seedling growth, α-amylase activity, total soluble sugar content, hormone content and associated gene relative expression under chilling stress. The results showed that both Se and SA priming significantly increased the seed germination and seedling growth attributes, and enhanced the starch degradation ability by increasing α-amylase activity and total soluble sugar content under chilling stress. Meanwhile, seed priming increased the transcription level of OsRamy1A, OsRamy3B that regulated by GA, and increased the transcription level of OsRamy3E that regulated by sugar signals. Furthermore, seed priming significantly improved the GA3 contents in rice seeds by up-regulating the expression of OsGA3ox1 and OsGA20ox1, and decreased the ABA content and the expression of OsNCED1, indicating that the improved starch degradation ability in primed rice seeds under chilling stress might be attributed to the increased GA3 and decreased ABA levels in primed rice seeds, which induced the expression of GA-mediated α-amylase. However, studies to explore how seed priming mediate hormonal metabolism and the expression of OsRamy3E are desperately needed.

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Morphological and transcriptomic responses/acclimations of erect‐type submerged macrophyteHydrilla verticillataboth at low‐light exposure and light recovery phases

Guo,

Gao,

Song

et al. 2023

Ecology and Evolution

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Light intensity is a determinant for submerged macrophytes. Little is known about their molecular responses to low‐light exposure, despite more informative and responsive than morphological traits. For erect‐type submerged macrophytes, the stem is more crucial relative to the leaf in acclimation to low‐light stress, but receives less attention. We determined morphological and stem transcriptomic responses/acclimations of Hydrilla verticillata to extremely and mildly low light (7.2 and 36 μmol photons m−2 s−1, respectively), that is, EL and ML, with the radiation intensity of 180 μmol photons m−2 s−1 as the control. Low‐light exposure continued for 9 days, followed by a 7‐day recovery phase (180 μmol photons m−2 s−1). At the exposure phase, the low‐light treatments, in particular the EL, decreased the relative growth ratio, but induced greater height and longer stem internode distance and epidermal cell. Such responses/acclimations continued into the recovery phase, despite more or less changes in the magnitude. Transcriptome showed that the photosynthetic system was inhibited at the exposure phase, but the macrophyte adjusted hormone synthesis relating to cell division and elongation. Moreover, the EL activated cell stress responses such as DNA repair. Following light recovery, the macrophyte exhibited a strong‐light response, although energy metabolism enhanced. Especially, the EL enriched the pathways relating to anthocyanin synthesis at such phase, indicating an activation of photoprotective mechanism. Our findings suggest that negative influences of low light occur at both low‐light exposure and recovery phases, but submerged macrophytes would acclimate to light environments. Transcriptome can show molecular basis of plant responses/acclimations, including but not limited to morphology. This study establishes a bridge connecting morphological and molecular responses/acclimations.

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Enhancement in rice seed germination via improved respiratory metabolism under chilling stress

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 23 publications

References 39 publications

Enhancement of Tainan 9 Peanut Seed Storability and Germination under Low Temperature

Enhancement of Tainan 9 Peanut Seed Storability and Germination under Low Temperature

Enhancement in Seed Priming-Induced Starch Degradation of Rice Seed Under Chilling Stress via GA-Mediated α-Amylase Expression

Morphological and transcriptomic responses/acclimations of erect‐type submerged macrophyteHydrilla verticillataboth at low‐light exposure and light recovery phases

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