Adaptation and acclimation of gametophytic traits to heat stress in a widely distributed wild plant along a steep climatic gradient DOI Creative Commons
Donam Tushabe, Franziska Altmann,

Erik Koehler

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 2, 2024

Abstract Climate change-induced heat waves often result in reduced seed yields and quality via high-temperature effects the gametophytic phase. Surprisingly, ability of pollen ovules, particularly among wild plant populations, to adapt or acclimate stress remains poorly understood. To address this gap, we examined adaptive acclimation potential six traits eleven distinct populations Silene vulgaris across a temperature gradient Europe. First, cultivated plants common garden reveal differences indicative adaptation. Next, assessed these by subjecting flowering two chronic (CHS) treatments: moderate (35/30 °C) severe (40/35 °C), for 18 days. Findings from experiment indicated no intraspecific variation gradient, suggesting that may not influence plant’s sexual adaptation its local habitat. Plants originating colder climates produced more larger seeds than those warmer climates. During CHS treatments, female gametophyte was less sensitive compared male gametophyte. Moderate led ovaries with more, large-sized while ovule numbers but increased their size. In contrast, both treatments decreased grain numbers, size, anther length, causing significant reductions. These reductions ultimately translated lower yield quality, which threaten sustained existence natural over time. Under did vary along except size under CHS, regions. Our findings suggest lack mechanisms (except size) indicates rely on alternative strategies, such as shifts time, respond thermal stress.

Language: Английский

Adaptation and Acclimation of Gametophytic Traits to Heat Stress in a Widely Distributed Wild Plant Along a Steep Climatic Gradient DOI Creative Commons
Donam Tushabe, Franziska Altmann,

Erik Koehler

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: March 30, 2025

ABSTRACT Climate change‐induced heat waves often reduce seed yields and quality via high‐temperature effects in the gametophytic phase. Yet, contrast to model crop species, ability of pollen ovules adapt or acclimate stress wild plants remains poorly understood. To address this gap, we examined adaptation acclimation potential six traits 11 Silene vulgaris populations across a temperature gradient Europe. First, cultivated common garden reveal differences indicative adaptation. Next, assessed their by subjecting flowering two chronic (CHS) treatments: moderate (35°C/30°C) severe (40°C/35°C) for 18 days. Also, estimated CHS on quantity quality. The experiment showed no intraspecific variation gradient, suggesting these may not influence reproductive local habitats. During CHS, female gametophyte was less temperature‐sensitive than male. Moderate led larger ovaries with more large‐sized ovules, while reduced ovule numbers but increased size. Both treatments decreased grain numbers, size, anther length, causing greater reductions. These reductions lower yield Under both treatments, did vary along except size under which warmer climates. Our findings revealed lack mechanisms (except size) gradient. suggest that rely alternative strategies, such as shifts physiology biochemistry phenology, respond thermal associated waves.

Language: Английский

Citations

0
Demographic consequences of an extreme heat wave are mitigated by spatial heterogeneity in an annual monkeyflower DOI Creative Commons
L. M. McDonald, Anna Scharnagl, Andrea K. Turcu

et al.

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(8)

Published: Aug. 1, 2023

Heat waves are becoming more frequent and intense with climate change, but the demographic evolutionary consequences of heat rarely investigated in herbaceous plant species. We examine a short extreme wave Oregon populations common yellow monkeyflower (

Language: Английский

Citations

3
Adaptation and acclimation of gametophytic traits to heat stress in a widely distributed wild plant along a steep climatic gradient DOI Creative Commons
Donam Tushabe, Franziska Altmann,

Erik Koehler

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 2, 2024

Abstract Climate change-induced heat waves often result in reduced seed yields and quality via high-temperature effects the gametophytic phase. Surprisingly, ability of pollen ovules, particularly among wild plant populations, to adapt or acclimate stress remains poorly understood. To address this gap, we examined adaptive acclimation potential six traits eleven distinct populations Silene vulgaris across a temperature gradient Europe. First, cultivated plants common garden reveal differences indicative adaptation. Next, assessed these by subjecting flowering two chronic (CHS) treatments: moderate (35/30 °C) severe (40/35 °C), for 18 days. Findings from experiment indicated no intraspecific variation gradient, suggesting that may not influence plant’s sexual adaptation its local habitat. Plants originating colder climates produced more larger seeds than those warmer climates. During CHS treatments, female gametophyte was less sensitive compared male gametophyte. Moderate led ovaries with more, large-sized while ovule numbers but increased their size. In contrast, both treatments decreased grain numbers, size, anther length, causing significant reductions. These reductions ultimately translated lower yield quality, which threaten sustained existence natural over time. Under did vary along except size under CHS, regions. Our findings suggest lack mechanisms (except size) indicates rely on alternative strategies, such as shifts time, respond thermal stress.

Language: Английский

Citations

0