Water stress tolerance tracks environmental exposure and exhibits a fluctuating sexual dimorphism in a tropical liverwort

  title={Water stress tolerance tracks environmental exposure and exhibits a fluctuating sexual dimorphism in a tropical liverwort},
  author={Rose A. Marks and Brennen D. Pike and D. Nicholas McLetchie},
  pages={791 - 802}
Water shortage events negatively impact plant productivity, threaten ecosystem functioning, and are predicted to increase dramatically in the coming years. Consequently, building a detailed understanding of how plants respond to water stress is critical for improving predictions of ecological processes and species range shifts under climate change. Here, we characterized patterns of intraspecific variation in dehydration tolerance (DhT, also dehydration tolerant) across a variable landscape in… Expand
Expression dynamics of dehydration tolerance in the tropical plant Marchantia inflexa.
Tolerance to prolonged water deficit occurs along a continuum in plants, with dehydration and desiccation tolerance representing some of the most extreme adaptations to water scarcity. Although,Expand
Fine-tuning functional syndromes for stressful environments: lessons on survival from the South African resurrection plant Myrothamnus flabellifolia
Resilience to abiotic stress is associated with a suite of functional traits related to defense and longevity. Stress tolerant plants are generally slow growing with extended leave lifespans andExpand
500 million years of charted territory: functional ecological traits in bryophytes
Since the late Cambrian era, bryophytes have been shaping terrestrial ecosystems through unique and diverse suites of anatomical, physiological, and morphological traits. In this review we highlightExpand
Microclimatic conditions and water content fluctuations experienced by epiphytic bryophytes in an Amazonian rain forest
Abstract. In the Amazonian rain forest, major parts of trees and shrubs are covered by epiphytic cryptogams of great taxonomic variety, but their relevance in biosphere–atmosphere exchange, climateExpand
Recent literature on bryophytes — 123(2)
Abalo-Loko, G. A., A. K. Guelly, M. J. Wigginton & C. Reeb. 2019. Checklist of liverworts and hornworts of Togo. Cryptogamie, B r y o l o g i e 4 0 ( 1 8 ) : 2 3 3 – 2 4 5 . [ d o i : 1 0 . 5 2 5 2 /Expand


Sex differences and plasticity in dehydration tolerance: insight from a tropical liverwort.
By studying a less extreme DhT phenotype, insight is gained into how more sensitive (yet still tolerant) organisms cope with dehydration and plasticity in DhT has the potential to inform management practices aimed at increasing tolerance to drought conditions. Expand
Stage-dependent patterns of drought tolerance and gas exchange vary between sexes in the alpine willow, Salix glauca
The results show that genetic divergence in physiology between sexes of S. glauca occurs in the absence of gender-specific reproductive sinks, males are the more physiologically plastic sex with respect to water use, and paradoxically, divergence in water relations between sexes is not detectable at sexual maturity under natural conditions. Expand
The Limits and Frontiers of Desiccation-Tolerant Life1
  • P. Alpert
  • Biology, Medicine
  • Integrative and comparative biology
  • 2005
The current knowledge of limits to tolerance suggests that they pose few obstacles to engineering tolerance in prokaryotes and in isolated cells and tissues, and there has already been much success on this scientific frontier of desiccation tolerance, but physical and physiological constraints and perhaps other limits may explain the lack of success. Expand
Generational differences in response to desiccation stress in the desert moss Tortula inermis.
Porophytes of Tortula inermis are more sensitive to rapid drying than are maternal gametophytes, and that sporophyte abortion in response to Desiccation results from either reduced desiccation tolerance of sporophytes relative to gametphytes, or from a termination of the sporophyne on the part of the gametoe in responseto stress. Expand
Desiccation tolerance of Sphagnum revisited: a puzzle resolved.
In contrast to typical hollow sphagna, hummock species invest more resources in water retention (desiccation avoidance), while they have a lower ability to develop physiological DT, confirming the morpho-physiological trade-off. Expand
Differences in desiccation tolerance do not explain altitudinal distribution patterns of tropical bryophytes
Both montane and lowland species survived dry periods of ≧80 days, which far exceeds the duration of dry periods in the wet lowland tropics, and can exclude intolerance to long dry spells as an explaination for the absence of the tested montane species in the lowlands. Expand
Dehydration tolerance in plants.
This chapter defines what dehydration tolerance is and how it can be assessed, important prerequisites to understanding the response of a plant to water loss, and discusses the key biochemical aspects of tolerance focusing on carbohydrates, late embryogenesis abundant and heat shock proteins, reactive oxygen scavenging (ROS) pathways, and novel transcription factors. Expand
Desiccation-tolerance in bryophytes: a review
Abstract Desiccation-tolerance (DT), the ability to lose virtually all free intracellular water and then recover normal function upon rehydration, is one of the most remarkable features ofExpand
Sexual dimorphism in response to stress
Sex differences in ecological, morphological and physiological traits have been commonly attributed to the different costs of reproduction associated with the male and the female function and are usually linked to trade-offs between allocation to reproduction and to other plant functions. Expand
Desiccation-tolerant plants in dry environments
Changes in the cell wall composition during drying reduce the mechanical damage caused by the loss of water and the subsequent shrinking of the vacuole and increase in expansin or cell wall-loosening activity during desiccation that enhances wall flexibility and promotes folding. Expand