Dynamics of homeostats: the basis of electrical, chemical, hydraulic, pH and calcium signaling in plants

Quantitative Plant Biology, Год журнала: 2025, Номер 6

Опубликована: Янв. 1, 2025

Abstract Homeostats are important to control homeostatic conditions. Here, we have analyzed the theoretical basis of their dynamic properties by bringing K homeostat out steady state (i) an electrical stimulus, (ii) external imbalance in + or H gradient (iii) a readjustment transporter activities. The reactions such changes can be divided into short-term response (tens milliseconds), where membrane voltage changed along with concentrations ions that not very abundant cytosol (H and Ca 2+ ), long-term (minutes longer) caused slow concentrations. mechanistic insights its dynamics limited but generalized, providing new perspective on electrical, chemical, hydraulic, pH signaling plants. results presented here also provide background for optogenetic experiments

Язык: Английский

---

A comprehensive review on rice responses and tolerance to salt stress

Frontiers in Plant Science, Год журнала: 2025, Номер 16

Опубликована: Март 31, 2025

The challenge of salinity stress significantly impacts global rice production, especially in coastal and arid regions where the salinization agricultural soils is on rise. This review explores complex physiological, biochemical, genetic mechanisms contributing to tolerance (Oryza sativa L.) while examining agronomic multidisciplinary strategies bolster resilience. Essential adaptations encompass regulation ionic balance, management antioxidants, adjustments osmotic pressure, all driven by genes such as OsHKT1;5 transcription factors like OsbZIP73. evolution breeding strategies, encompassing traditional methods cutting-edge innovations, has produced remarkable salt-tolerant varieties FL478 BRRI dhan47. advancements this field are enhanced including integrated soil management, crop rotation, chemical treatments spermidine, which through antioxidant activity transcriptional mechanisms. Case studies from South Asia, Sub-Saharan Africa, Middle East and, Australia demonstrate transformative potential utilizing varieties; however, challenges persist, polygenic nature tolerance, environmental variability, socioeconomic barriers. highlights importance collaborative efforts across various disciplines, merging genomic technologies, sophisticated phenotyping, inclusive practices foster climate-resilient sustainable cultivation. work seeks navigate complexities its implications for food security, employing inventive cohesive confront posed climate change.

Язык: Английский

---

An auxin homeostat allows plant cells to establish and control defined transmembrane auxin gradients

New Phytologist, Год журнала: 2024, Номер 244(4), С. 1422 - 1436

Опубликована: Сен. 15, 2024

Summary Extracellular auxin maxima and minima are important to control plant developmental programs. Auxin gradients provided by the concerted action of proteins from three major plasma membrane (PM) transporter classes AUX1/LAX, PIN ATP‐BINDING CASSETTE subfamily B (ABCB) transporters. But neither genetic nor biochemical modeling approaches have been able reliably assign individual roles interplay these types. Based on thermodynamic properties transporters, we show here mathematical computational simulations that different types allows adjustment specific transmembrane gradients. The dynamic flexibility ‘auxin homeostat’ comes at cost an energy‐consuming cycling’ across membrane. An unexpected finding was potential functional ABCB‐PIN synchronization appears allow optimization trade‐off between speed PM gradient one hand ATP consumption disturbance general anion homeostasis other. In conclusion, our analyses provide fundamental insights into constraints transport in plants.

Язык: Английский

---

Effects of different crushing methods on the properties and flavor of selenium-enriched sweet potato leaves

Food Chemistry X, Год журнала: 2025, Номер 26, С. 102266 - 102266

Опубликована: Фев. 1, 2025

In this study, the physical, chemical, structural, and antioxidant characteristics of selenium (Se)-enriched sweet potato leaves (SSPL) powder produced through shear breaking superfine grinding were examined. The SSPL had a brighter color, smaller particle size, spherical shape. showed improved dispersibility solubility but reduced liquidity. Superfine destroyed crystalline area decreased thermal stability, while Se application did not significantly change ordered structure. Correlation analysis that could improve crude fiber, lipid, total flavonoids, polyphenol, enhance activities compared to breaking. enrichment can content protein DPPH• scavenging activity reducing power. flavor characteristic was altered with different crushing methods concentrations. serve as potential resource for new solid beverage.

Язык: Английский

---

Potassium homeostasis and signalling: from the whole plant to the subcellular level

Quantitative Plant Biology, Год журнала: 2025, Номер 6

Опубликована: Янв. 1, 2025

Potassium is an essential macronutrient required for plant growth and development. Over the recent decade, important signalling role of K+ has emerged. Here, we discuss some aspects such at various levels functional organisation. The topic covered include: (1) mechanisms long-distant transport in xylem phloem molecular identity regulation loading unloading into vasculature; (2) essentiality physiological roles cycling between shoots roots; (3) sensing low K+; (4) maintenance homeostasis cellular level; (5) stress-induced modulation cytosolic as a signal adaptive responses to hostile environment; (6) stress-specific "signatures" their decoding by purine metabolism H+-ATPase activity; (7) loss metabolic switch regulator autophagy; (8) vacuolar sensing.

Язык: Английский

---

Differential ion transport mechanisms in arabidopsis and crops

Trends in Plant Science, Год журнала: 2025, Номер unknown

Опубликована: Июнь 1, 2025

Язык: Английский

---