Galactolipid remodeling is involved in drought-induced leaf senescence in maize

Chen, Daoqian; Wang, Shiwen; Qi, Lingyun; Yin, Lina; Deng, Xin

doi:10.1016/j.envexpbot.2018.02.017

Cited by 54 publications

(50 citation statements)

References 55 publications

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“…This has been observed in several species, such as Arabidopsis thaliana [24], cowpea (Vigna unguiculata L.(Walp.)) [7], Craterostigma plantagineum [3], and maize (Zea mays L.) [25]. In recent years, research found that galactolipids not only establish the lipid bilayer in which the photosynthetic complexes are embedded, but also participate in photosynthesis light reactions [26,27].…”

Section: Introductionmentioning

confidence: 99%

Dynamic changes in membrane lipid composition of leaves of winter wheat seedlings in response to PEG-induced water stress

et al. 2020

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Background: Membrane lipid composition associates closely with membrane stability and fluidity under water stress. In this study, lipidomic analyses based on electrospray ionization mass spectrometry (ESI-MS/MS) were carried out to explore dynamic changes of membrane lipids in term of molecular species caused by PEG (Polyethylene glycol-6000)-induced water stress in wheat seedlings. Results: Among the main phospholipids, phosphatidylcholine (PC), phosphatidylethanolamine (PE), and phosphatidylglycerol (PG) are primary degradation targets, and PC was degraded in the largest degree. Membrane ion leakage dramatically increased later than the significant reduction of these phospholipids, indicating that the loss of membrane integrity lagged behind severe phospholipid degradation. Monogalactosyldiacylglycerol (MGDG) increased firstly and decreased later, while digalactosyldiacylglycerol (DGDG) ratcheted up with stress. DGDG/MGDG increased after stress for 3 days, and unsaturation of DGDG was promoted with stress. Variation trends of galactolipids differed among molecular species. The time when MGDG (34:3), DGDG (34:3) began to decline approached to the time when non-stomatal limitation impaired photosynthesis. While the two predominant molecular species MGDG (36:6) and DGDG (36:6) began to decline later. So we speculated that MGDG (34:3), DGDG (34:3) might be key components in photosynthesis apparatus and participate in photosynthesis directly. While the two predominant molecular species, MGDG (36:6) and DGDG (36:6) might locate in thylakoid lipid bilayer matrix and play roles in stabilizing the membrane. The research provides new insights into the dynamic response of lipid metabolism to PEG-induced water stress. Conclusion: In wheat plants under water stress, the major molecular species of PC, PE and PG were degraded, MGDG and DGDG molecular species had differing degradation time courses.

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Section: Introductionmentioning

confidence: 99%

Dynamic changes in membrane lipid composition of leaves of winter wheat seedlings in response to PEG-induced water stress

et al. 2020

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“…Furthermore, a higher ratio of DGDG/MGDG and PC/PE is indicative of the maintenance of membrane fluidity (Narayanan, Tamura, Roth, Prasad, & Welti, ). DGDG and MGDG can improve chloroplast membrane stability and retard leaf senescence (Chen, Wang, Qi, Yin, & Deng, ). An increasing number of studies have shown that an increased DGDG:MGDG ratio contributes to plant adaption to environmental stresses, including salt, drought, and high temperature (Chen et al, ; Torres‐Franklin, Gigon, De Melo, Zuily‐Fodil, & Pham‐Thi, ; Wang et al, ; Zhang, Xu, & Huang, ).…”

Section: Introductionmentioning

confidence: 99%

“…DGDG and MGDG can improve chloroplast membrane stability and retard leaf senescence (Chen, Wang, Qi, Yin, & Deng, ). An increasing number of studies have shown that an increased DGDG:MGDG ratio contributes to plant adaption to environmental stresses, including salt, drought, and high temperature (Chen et al, ; Torres‐Franklin, Gigon, De Melo, Zuily‐Fodil, & Pham‐Thi, ; Wang et al, ; Zhang, Xu, & Huang, ). Seed priming with choline has been reported to alter phospholipid content of wheat plants, which may affect tolerance (Salama & Mansour, ).…”

Section: Introductionmentioning

confidence: 99%

“…DGDG and MGDG can improve chloroplast membrane stability and retard leaf senescence (Chen, Wang, Qi, Yin, & Deng, 2018). An increasing number of studies have shown that an increased DGDG:…”

mentioning

confidence: 99%

“…MGDG ratio contributes to plant adaption to environmental stresses, including salt, drought, and high temperature (Chen et al, 2018;Torres-Franklin, Gigon, De Melo, Zuily-Fodil, & Pham-Thi, 2007;Wang et al, 2014;Zhang, Xu, & Huang, 2018). Seed priming with choline has been reported to alter phospholipid content of wheat plants, which may affect tolerance (Salama & Mansour, 2015).…”

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confidence: 99%

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Up‐regulation of lipid metabolism and glycine betaine synthesis are associated with choline‐induced salt tolerance in halophytic seashore paspalum

Gao

Zhang

et al. 2019

Plant Cell & Environment

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Choline may affect salt tolerance by regulating lipid and glycine betaine (GB) metabolism. This study was conducted to determine whether alteration of lipid profiles and GB metabolism may contribute to choline regulation and genotypic variations in salt tolerance in a halophytic grass, seashore paspalum (Paspalum vaginatum). Plants of Adalayd and Sea Isle 2000 were subjected to salt stress (200‐mM NaCl) with or without foliar application of choline chloride (1 mM). Genotypic variations in salt tolerance and promotive effects of choline application on salt tolerance were associated with both the up‐regulation of lipid metabolism and GB synthesis. The genotypic variations in salt tolerance associated with lipid metabolism were reflected by the differential accumulation of phosphatidylcholine and phosphatidylethanolamine between Adalayd and Sea Isle 2000. Choline‐induced salt tolerance was associated with of the increase in digalactosyl diacylglycerol (DGDG) content including DGDG (36:4 and 36:6) in both cultivars of seashore paspalum and enhanced synthesis of phosphatidylinositol (34:2, 36:5, and 36:2) and phosphatidic acid (34:2, 34:1, and 36:5), as well as increases in the ratio of digalactosyl diacylglycerol: monogalactosyl diacylglycerol (DGDG:MGDG) in salt‐tolerant Sea Isle 2000. Choline regulation of salt tolerance may be due to the alteration in lipid metabolism in this halophytic grass species.

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Within‐canopy carbon partitioning to cotton leaves in response to irrigation

Pabuayon,

Bicaldo,

Ritchie

2024

Crop Science

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When water resources are limited, cotton (Gossypium hirsutum L.) plants adapt in part through adjustments in carbon allocation strategies, often evident in the leaves within the canopy. The dynamics of leaf carbon accumulation provide insights into how the plant partitions and uses carbon resources, a key aspect of optimizing crop productivity. In this study, we investigated the dynamics of leaf carbon accumulation in two cotton cultivars (Phytogen [PHY] 350 and Stoneville [ST] 5707) across spatial and temporal scales under two different levels of irrigation (low: 178 mm year−1, high: 356 mm year−1) in 2020 and 2021. For each cultivar and irrigation treatment, an increase in leaf mass occurred primarily at the bottom of the canopy early in the season, followed by additional leaf production in the middle of the plant as the season progressed. Irrigation reduction resulted in a canopy with reduced radiation interception, less leaf shading in the lower canopy, and thicker leaves. In contrast, more irrigation created canopies with a larger effective leaf area, increasing total light interception despite increased shading at the canopy base. Additionally, leaf carbon allocation is synchronized with fruit carbon demand at the onset of the first bloom stage for an early‐maturing cultivar. Overall, this study provides valuable insights into the complex relationship between water availability, radiation intensity within the canopy, and leaf carbon dynamics, contributing to a more comprehensive understanding of the plant's overall performance in resource‐constrained environments.

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Galactolipid remodeling is involved in drought-induced leaf senescence in maize

Cited by 54 publications

References 55 publications

Dynamic changes in membrane lipid composition of leaves of winter wheat seedlings in response to PEG-induced water stress

Dynamic changes in membrane lipid composition of leaves of winter wheat seedlings in response to PEG-induced water stress

Up‐regulation of lipid metabolism and glycine betaine synthesis are associated with choline‐induced salt tolerance in halophytic seashore paspalum

Within‐canopy carbon partitioning to cotton leaves in response to irrigation

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