孕产妇的氧化稳定影响了在最佳和压力条件下雌性性质细胞的发育
Junzhe Wang1,2, Xiaolong Guo1, Yijin Chen1
1State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China.
The Plant cell
|February 20, 2024
概括
在母植物组织中由GSNOR调节的氧化 (NO) 稳态,对于雌性体内细胞的发育和生育是至关重要的. 这一途径控制了辅酶运输,影响了种子产量,特别是在环境压力下.
科学领域:
- 植物生殖生物学 植物生殖生物学
- 植物应激生理学 植物应激生理学
- 分子植物科学 分子植物科学
背景情况:
- 环境压力降低了可受精的雌性配体细胞 (FGs),提高了后代的生存率.
- 对于母植物感知生长和压力以调节FG发育的机制尚不清楚.
研究的目的:
- 研究一氧化 (NO) 稳态在控制植物雌性性异构体发育中的作用.
- 阐明S-nitrosoglutathione减少酶 (GSNOR) 在调节NO水平及其对生育能力的影响中的功能.
主要方法:
- 使用了Arabidopsis thaliana作为一个模型生物.
- 分析了GSNOR无突变物以观察对NO水平,辅酶运输和FG发育的影响.
- 操纵GSNOR表达和auxin流量以评估在最佳和压力条件下 (干旱,盐) 对生育能力的影响.
主要成果:
- GSNOR蛋白在菌组织中积聚,间接控制菌细胞的发育.
- 缺少GSNOR会导致NO的积累,限制了auxin流量,抑制了FG的发育,降低了生育能力.
- 在母体组织中恢复GSNOR或增加auxin流量可以提高FG发育和生育能力.
- 在干旱和盐分压力下,GSNOR操纵和auxin补充可以提高生育能力.
结论:
- 对于正常的辅酶运输和母体对FG发育的控制,NO稳态是必不可少的.
- 这一途径在确定植物种子产量方面发挥着关键作用.
- 了解这种机制可以帮助减轻不利环境中的产量损失.
相关概念视频
Nitric Oxide Signaling Pathway
5.0K
Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...
5.0K
Responses to Heat and Cold Stress
13.5K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.5K
Regulation of Transpiration by Stomata
28.3K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
28.3K
Oogenesis
63.7K
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
63.7K
Overview of Metabolism
30.2K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
30.2K
Gonadal and Placental Hormones
1.4K
The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
1.4K


