Tree post‐drought recovery: scenarios, regulatory mechanisms and ways to improve

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2024, Номер 99(5), С. 1595 - 1612

Опубликована: Апрель 5, 2024

Efficient post-drought recovery of growth and assimilation enables a plant to return its undisturbed state functioning. Unlike annual plants, trees suffer not only from the current drought, but also cumulative impacts consecutive water stresses which cause adverse legacy effects on survival performance. This review provides an integrated assessment ecological, physiological molecular evidence photosynthesis in trees, with view informing breeding better ability recover stress. Suppression processes can result stress damage controlled downshift as part tree acclimation water-limited conditions. In latter case, could potentially be activated by turning off controlling mechanisms, several obstacles make this unlikely. Tree phenology, specifically photoperiodic constraints, limit photosynthesis, targeting these constraints may represent promising way breed enhanced post-drought. The mechanisms photoperiod-dependent regulation shoot, secondary root are reviewed. Finally, limitations trade-offs altering discussed.

Язык: Английский

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Anatomical distribution of starch in the stemwood influences carbon dynamics and suggests storage‐growth trade‐offs in some tropical trees

Journal of Ecology, Год журнала: 2023, Номер 111(11), С. 2532 - 2548

Опубликована: Окт. 10, 2023

Abstract Trees balance temporal asynchrony in carbon source and sink activity by accumulating using non‐structural (NSC). Previous work has demonstrated differences the amount distribution of NSC stored stemwood tropical tree species related these patterns to growth mortality rates. However, we still do not know how changes location starch, a major component stemwood, influence seasonal dynamics mature trees this may reflect storage‐growth trade‐offs. In work, hypothesized that combining two life history traits, here leaf habit (evergreen/semi‐deciduous) anatomical starch within (parenchyma storage fibre storage), would allow us explain interplay between sources sinks use accumulation stem. We expected semi‐deciduous/fibre‐storing have greater amplitudes activity, therefore variation content stronger trade‐offs than evergreen/parenchyma‐storing species. measured monthly increments stem radial growth, soluble sugars every 3 months during 2019 Dacryodes microcarpa (semi‐deciduous/fibre‐storing species), Ocotea leucoxylon (evergreen/parenchyma‐storing species) Sacoglottis guianensis (semi‐deciduous/parenchyma‐storing species). found but semi‐deciduous species, with amplitude fibre‐storing also had capacity respiration The further showed negative relationship consumption/accumulation rainy season, suggesting trade‐off storage, some cases when was low. Synthesis . Our results show on three differ phenology traits. Semi‐deciduous/fibre‐storing activities more seasonally dynamic content. Since studied are slower‐growing longer‐lived lower rates compared parenchyma‐storing provide clues about traits could their survival span.

Язык: Английский

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Contributions of Intraspecific Variation to Drought Tolerance in Trees

Current Forestry Reports, Год журнала: 2023, Номер 9(6), С. 461 - 472

Опубликована: Сен. 22, 2023

Abstract Purpose of Review The capacity woody plants to cope with climate change depends on their adjustments changing environmental conditions by phenotypic plasticity or genotypic changes (i.e., local adaptation). To determine whether intraspecific trait variation (ITV) translates into resistance tolerance drought and eventually how it relates performance when facing drought, we reviewed the recent literature in plant functional traits along aridity gradients. Recent Findings At level, vary gradients, but this considered species. While ITV is ubiquitous relevant magnitude, its relationship tree case growth survival unclear very idiosyncratic. Summary varies gradients and, for several traits, comparable magnitude as interspecific variation. However, between not consistent among This makes use challenging quantifying contribution tolerance.

Язык: Английский

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The sensitivity of root water uptake to cold root temperature follows species‐specific upper elevational distribution limits of temperate tree species

Plant Cell & Environment, Год журнала: 2024, Номер 47(6), С. 2192 - 2205

Опубликована: Март 13, 2024

Physiological water stress induced by low root temperatures might contribute to species-specific climatic limits of tree distribution. We investigated the temperature sensitivity uptake and transport in seedlings 16 European species which reach their natural upper elevation distribution at different distances alpine treeline. used

Язык: Английский

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Coordinated responses of Hemiptelea davidii at the individual tree and stand levels to interannual climatic variation in a water-limited area

Forest Ecology and Management, Год журнала: 2024, Номер 561, С. 121900 - 121900

Опубликована: Апрель 21, 2024

Язык: Английский

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