Maternal temperature effects on dormancy influence germination responses to water availability in Arabidopsis thaliana

Edwards, Brianne; Burghardt, Liana T.; Zapata-Garcia, Mercedes; Donohue, Kathleen

doi:10.1016/j.envexpbot.2016.02.011

Cited by 24 publications

(21 citation statements)

References 70 publications

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“…The environment experienced by the mother plant frequently affects germination of the progeny by modifying dormancy levels (Penfield & Springthorpe, ; He et al ., ; Auge et al ., ; Burghardt et al ., ; Edwards et al ., ; Leverett et al ., ). Changes in the maternal environment can do so even if developing seeds themselves do not experience those changes, as observed here.…”

Section: Discussionmentioning

confidence: 99%

“…Such 'maternal environmental effects' are well documented in plants (Gutterman, 1982;Donohue & Schmitt, 1998;Donohue, 2009). For instance, in Arabidopsis thaliana, low temperatures experienced before or during seed maturation reduce germination propensity, alter seed responses to chilling and water availability during imbibition, and reduce seed longevity, demonstrating that environmental conditions experienced at one life stage can influence subsequent developmental transitions (Kendall & Penfield, 2012;Penfield & Springthorpe, 2012;Chen et al, 2014;He et al, 2014;Auge et al, 2015;Burghardt et al, 2015;MacGregor et al, 2015;Coughlan et al, 2016;Edwards et al, 2016). These effects of temperature also persist as seeds after-ripen (lose primary dormancy over time) and undergo dormancy cycling (Auge et al, 2015;Burghardt et al, 2015;Edwards et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Maternal vernalization and vernalization‐pathway genes influence progeny seed germination

et al. 2017

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Different life stages frequently respond to the same environmental cue to regulate development so that each life stage is matched to its appropriate season. We investigated how independently each life stage can respond to shared environmental cues, focusing on vernalization, in Arabidopsis thaliana plants. We first tested whether effects of rosette vernalization persisted to influence seed germination. To test whether genes in the vernalization flowering pathway also influence germination, we assessed germination of functional and nonfunctional alleles of these genes and measured their level of expression at different life stages in response to rosette vernalization. Rosette vernalization increased seed germination in diverse ecotypes. Genes in the vernalization flowering pathway also influenced seed germination. In the Columbia accession, functional alleles of most of these genes opposed the germination response observed in the ecotypes. Some genes influenced germination in a manner consistent with their known effects on FLOWERING LOCUS C gene regulation during the transition to flowering. Others did not, suggesting functional divergence across life stages. Despite persistent effects of environmental conditions across life stages, and despite pleiotropy of genes that affect both flowering and germination, the function of these genes can differ across life stages, potentially mitigating pleiotropic constraints and enabling independent environmental regulation of different life stages.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Maternal vernalization and vernalization‐pathway genes influence progeny seed germination

et al. 2017

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“…Our results also showed that plant Si contents showed a decline with the MAP (Figure a). The positive correlation between plant Si contents and MAT (Figure b) indicates that increasing MAT may accelerate Si accumulation in plant tissues by promoting soil water availability (Edwards, Burghardt, Zapata‐Garcia, & Donohue, ). At the community level, plant diversity (species richness) and functional group (e.g., grass and legumes) can significantly influence the Si yields of above‐ground biomass in grasslands (Schaller et al., ).…”

Section: Discussionmentioning

confidence: 99%

Silicon distribution in meadow steppe and typical steppe of northern China and its implications for phytolith carbon sequestration

Zhao

Yang

Song

et al. 2017

Grass and Forage Science

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Silicon (Si) not only plays an important role in plant growth but also contributes significantly to the long‐term terrestrial carbon sink in the form of phytoliths. This study investigated Si content of 184 plant species in meadow steppe and typical steppe of northern China to examine the influential factors of Si distribution and evaluate the potential phytolith carbon sequestration of these grasslands. Our results indicated that the average Si content generally decreased in the following order of Equisetopsida > Monocotyledoneae > Dicotyledoneae. Within angiosperms, although most Si accumulator plants were commelinid monocots, many eudicots also accumulated abundant Si in their above‐ground tissues. The Si content of plant above‐ground parts in typical steppe (6.53 ± 2.88 g/kg) was significantly higher than that in meadow steppe (2.15 ± 0.92 g/kg). The estimated phytolith‐occluded carbon (PhytOC) production flux in typical steppe (0.81 ± 0.36 kg CO2 ha−1 year−1) was higher than that in meadow steppe (0.54 ± 0.23 kg CO2 ha−1 year−1). This study demonstrates that plant phylogeny influences the Si content of individual species, whereas grassland type with different mean annual precipitation and mean annual temperature may significantly affect the abundance of high Si species. We conclude that increasing the abundance of grass species with high Si content in meadow steppe and appropriate grazing and fertilizer application in typical steppe will enhance the phytolith carbon sequestration in grasslands of northern China.

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“…Maternal environments can have persistent effects on progeny phenotypes. Some of the maternal effects on seed traits mentioned earlier persisted for several weeks after postdispersal ripening (Burghardt et al ., ; Edwards et al ., ). In Brassica rapa , the maternal competitive environment influenced germination, which later influenced bolting date, leaf length, stem height and internode length (Dechaine et al ., ).…”

Section: When Are Responses To Parental Vs Progeny Environmental Cuesmentioning

confidence: 97%

Adjusting phenotypes via within‐ and across‐generational plasticity

et al. 2017

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Contents 343I.343II.343III.347IV.348348References348 Summary There is renewed interest in how transgenerational environmental effects, including epigenetic inheritance, contribute to adaptive evolution. The contribution of across‐generation plasticity to adaptation, however, needs to be evaluated within the context of within‐generation plasticity, which is often proposed to contribute more efficiently to adaptation because of the potentially greater accuracy of progeny than parental cues to predict progeny selective environments. We highlight recent empirical studies of transgenerational plasticity, and find that they do not consistently support predictions based on the higher predictive ability of progeny environmental cues. We discuss these findings within the context of the relative predictive ability of maternal and progeny cues, costs and constraints of plasticity in parental and progeny generations, and the dynamic nature of the adaptive value of within‐ and across‐generation plasticity that varies with the process of adaptation itself. Such contingent and dynamically variable selection could account for the diversity of patterns of within‐ and across‐generation plasticity observed in nature, and can influence the adaptive value of the persistence of environmental effects across generations.

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Maternal temperature effects on dormancy influence germination responses to water availability in Arabidopsis thaliana

Cited by 24 publications

References 70 publications

Maternal vernalization and vernalization‐pathway genes influence progeny seed germination

Maternal vernalization and vernalization‐pathway genes influence progeny seed germination

Silicon distribution in meadow steppe and typical steppe of northern China and its implications for phytolith carbon sequestration

Adjusting phenotypes via within‐ and across‐generational plasticity

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