Genome-Wide Association Mapping of Fertility Reduction upon Heat Stress Reveals Developmental Stage-Specific QTLs in <i>Arabidopsis thaliana</i>

Bac-Molenaar, Johanna A.; Fradin, E.F.; Becker, Frank; Rienstra, Juriaan; Schoot, J. van der; Vreugdenhil, D.; Keurentjes, Joost J. B.

doi:10.1105/tpc.15.00248

Cited by 90 publications

(87 citation statements)

References 93 publications

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“…1C). High temperature causes infertility in Arabidopsis (Bac-Molenaar et al, 2015), and we found that 30°C is approaching the higher temperature threshold for Col-0. This may explain the reduction in seed set, which also is known to lead to an increase in seed size (Hughes et al, 2008).…”

Section: Temperature Influences the Oil Content Of Arabidopsis Seedsmentioning

confidence: 63%

Genome Wide Analysis of Fatty Acid Desaturation and Its Response to Temperature

et al. 2017

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Section: Temperature Influences the Oil Content Of Arabidopsis Seedsmentioning

confidence: 63%

Genome Wide Analysis of Fatty Acid Desaturation and Its Response to Temperature

et al. 2017

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“…To identify novel players involved in the effect of SA and ABA on JA‐responsive gene expression, we performed GWA mapping using the ~214k SNP set that is commonly used for GWA studies in Arabidopsis (Atwell et al, ; Bac‐Molenaar et al, ; Horton et al, ; Kim et al, ; Li, et al, ). To this end, we used normally distributed log 2 PDF1.2 gene expression data of the MeJA + SA treatment and the MeJA+ABA treatment, relative to PDF1.2 expression data of the single MeJA treatment [log 2 ( PDF1.2 MeJA+SA /PDF1.2 MeJA )] and [log 2 ( PDF1.2 MeJA+ABA /PDF1.2 MeJA )], respectively (Table S1).…”

Section: Resultsmentioning

confidence: 99%

Genome‐wide association study reveals novel players in defense hormone crosstalk in Arabidopsis

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et al. 2018

Plant Cell & Environment

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Jasmonic acid (JA) regulates plant defenses against necrotrophic pathogens and insect herbivores. Salicylic acid (SA) and abscisic acid (ABA) can antagonize JA‐regulated defenses, thereby modulating pathogen or insect resistance. We performed a genome‐wide association (GWA) study on natural genetic variation in Arabidopsis thaliana for the effect of SA and ABA on the JA pathway. We treated 349 Arabidopsis accessions with methyl JA (MeJA), or a combination of MeJA and either SA or ABA, after which expression of the JA‐responsive marker gene PLANT DEFENSIN1.2 (PDF1.2) was quantified as a readout for GWA analysis. Both hormones antagonized MeJA‐induced PDF1.2 in the majority of the accessions but with a large variation in magnitude. GWA mapping of the SA‐ and ABA‐affected PDF1.2 expression data revealed loci associated with crosstalk. GLYI4 (encoding a glyoxalase) and ARR11 (encoding an Arabidopsis response regulator involved in cytokinin signalling) were confirmed by T‐DNA insertion mutant analysis to affect SA–JA crosstalk and resistance against the necrotroph Botrytis cinerea. In addition, At1g16310 (encoding a cation efflux family protein) was confirmed to affect ABA–JA crosstalk and susceptibility to Mamestra brassicae herbivory. Collectively, this GWA study identified novel players in JA hormone crosstalk with potential roles in the regulation of pathogen or insect resistance.

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“…However, nonfunctional FRI alleles are associated with negative pleiotropic effects on branching and fitness, likely limiting the adaptive potential of the FRI locus (Scarcelli et al, 2007). Natural variation in FLC and FRI also affects other important life history traits, including seed germination (Chiang et al, 2009), water use efficiency, which is a major dehydration avoidance mechanism (McKay et al, 2003), and even flower tolerance to heat shocks (Bac-Molenaar et al, 2015). FLC also plays a role in more long-lived plants.…”

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Habitat-Associated Life History and Stress-Tolerance Variation in Arabidopsis arenosa

et al. 2016

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Weediness in ephemeral plants is commonly characterized by rapid cycling, prolific all-in flowering, and loss of perenniality. Many species made transitions to weediness of this sort, which can be advantageous in high-disturbance or human-associated habitats. The molecular basis of this shift, however, remains mostly mysterious. Here, we use transcriptome sequencing, genome resequencing scans for selection, and stress tolerance assays to study a weedy population of the otherwise nonweedy Arabidopsis arenosa, an obligately outbreeding relative of Arabidopsis thaliana. Although weedy A. arenosa is widespread, a single genetic lineage colonized railways throughout central and northern Europe. We show that railway plants, in contrast to plants from sheltered outcrops in hill/mountain regions, are rapid cycling, have lost the vernalization requirement, show prolific flowering, and do not return to vegetative growth. Comparing transcriptomes of railway and mountain plants across time courses with and without vernalization, we found that railway plants have sharply abrogated vernalization responsiveness and high constitutive expression of heat-and cold-responsive genes. Railway plants also have strong constitutive heat shock and freezing tolerance compared with mountain plants, where tolerance must be induced. We found 20 genes with good evidence of selection in the railway population. One of these, LATE ELONGATED HYPOCOTYL, is known in A. thaliana to regulate many stress-response genes that we found to be differentially regulated among the distinct habitats. Our data suggest that, beyond life history regulation, other traits like basal stress tolerance also are associated with the evolution of weediness in A. arenosa.Life history traits differ between and within plant species and commonly reflect the requirements of the habitats in which they are found (Baker, 1974;Weinig et al., 2003;Grime, 2006). Depending on abiotic and biotic conditions, a variety of strategies can be favored, and accordingly, weeds are phenotypically diverse. In environments that are unpredictable, with frequent occurrences of stresses like drought, temperature fluctuations, or human-associated perturbations, rapid cycling and early flowering are common (Hall and Willis, 2006;Sherrard and Maherali, 2006;Franks et al., 2007;Wu et al., 2010). Life history adaptations can help mediate tradeoffs between resource accumulation and stress avoidance and are important for wild species as well as for crops (Jung and Müller, 2009). Comparing results among species, as well as the correlates of these traits with other fitness-related traits, promises new insights into the mechanisms of adaptation to unpredictable habitats.A common phenotype of plants in unpredictable habitats is early and prolific flowering relative to related populations in more stable habitats (Baker, 1965; Grotkopp et al

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Genome-Wide Association Mapping of Fertility Reduction upon Heat Stress Reveals Developmental Stage-Specific QTLs in Arabidopsis thaliana

Cited by 90 publications

References 93 publications

Genome Wide Analysis of Fatty Acid Desaturation and Its Response to Temperature

Genome Wide Analysis of Fatty Acid Desaturation and Its Response to Temperature

Genome‐wide association study reveals novel players in defense hormone crosstalk in Arabidopsis

Habitat-Associated Life History and Stress-Tolerance Variation in Arabidopsis arenosa

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