Carbon Dynamics Under Drought and Recovery in Grapevine's Leaves.

Drought stress reduces leaf net assimilation (A) and phloem export, but the equilibrium between the two is unknown. Consequently, the leaf carbon balance and the primary use of the leaf nonstructural carbohydrates (NSC) under water deficit are unclear. Also, we do not know how quickly leaves can replenish their NSC storage and resume export after rehydration.

Potassium deficiency reduces grapevine transpiration through decreased leaf area and stomatal conductance.

Plants require potassium (K) to support growth and regulate hydraulics. Yet, K's effects on transpiration are still speculated. We hypothesized that K deficiency would limit grapevine water uptake by limiting canopy size and stomatal conductance (g).

Losing ground: projections of climate-driven bloom shifts and their implications for the future of California's almond orchards.

Climate change is expected to impact the spring phenology of perennial trees, potentially altering the suitability of land for their cultivation. In this study, we investigate the effects of climate change on the bloom timing of almond orchards, focusing on California, the world's leading region for almond production. By analyzing historical climatic data, employing a model that considers hourly temperatures and fall non-structural carbohydrates to predict bloom dates, and examining various Coupled Model Intercomparison Project Phase 6 (CMIP6) scenarios, we assess the potential impacts of climate shifts on plant phenology and, consequently, on land suitability for almond farming.

The metabolic reserves, carbohydrate balance and nutritional status of jojoba (Simmondsia chinensis), in relation to its annual cycle and fruit load.

Jojoba (Simmondsia chinensis (Link) Schneider) holds high industrial value and an extended cultivation trend. Despite its increased importance, there is a lack of fundamental information about its metabolic reserves and development. Our objective was to characterise metabolite allocation and fluctuations in the carbohydrate and nutrient balance of jojoba plants, as affected by fruit load and the plant's annual cycle.

Winding up the bloom clock-do sugar levels at senescence determine how trees respond to winter temperature?

Variable winter temperatures cause a year-to-year discrepancy in the phenology of deciduous trees. This implies that an intrinsic 'winter clock' synchronizes bloom with the progression of winter to spring. The carbohydrate-temperature (C-T) model established a mechanistic association between carbohydrate metabolism in dormant trees and hourly winter temperatures.