Natural variation in rosette size under salt stress conditions corresponds to developmental differences between Arabidopsis accessions and allelic variation in the<i>LRR-KISS</i>gene

Julkowska, Magdalena; Klei, Karlijn; Fokkens, Like; Haring, Michel A.; Schranz, M. Eric; Testerink, Christa

doi:10.1093/jxb/erw015

Cited by 74 publications

(76 citation statements)

References 36 publications

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“…An RSA response type with short LRs was linked to lower sodium uptake, based on a study of 10 accessions (Julkowska et al, 2014), but no data are available for larger populations. We found no correlations of our RSA data with published results on the effects of salt on rosette size, survival, or Na + levels in the leaf (Supplemental Table S8; Rus et al, 2006;Katori et al, 2010;Julkowska et al, 2016). However, differences in experimental setups and NaCl concentrations used could be the main reason for the lack of correlations.…”

Section: Discussioncontrasting

confidence: 78%

“…Moreover, we tested the correlation of our data from MRL, #LR, and aLRL with earlier reports on rosette size and water content in salt conditions (Supplemental Table S8; Julkowska et al, 2016). The only significant, but still very low (r 2 = 0.23), correlation was found between #LR on double stress and rosette size in salt stress.…”

Section: Root Responses To Double Stress Partly Rely On Rsa Phenotypementioning

confidence: 65%

“…Accession-specific correlations between MRL, #LR, and aLRL on salt conditions described here and projected rosette area, fresh weight, dry weight, and water content reported by Julkowska et al (2016).…”

Section: Supplemental Datamentioning

confidence: 72%

“…Seeds of accessions from the Arabidopsis (Arabidopsis thaliana) HapMap population were available from previous research (Julkowska et al, 2016). In order to ensure the same seed quality, all lines were propagated together under long-day conditions (21°C, 70% humidity, and 16/8-h light/dark cycle) with 8 weeks of vernalization at 4°C from week 3 after sowing.…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

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Phosphate-dependent root system architecture responses to salt stress

et al. 2016

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Nutrient availability and salinity of the soil affect the growth and development of plant roots. Here, we describe how inorganic phosphate (Pi) availability affects the root system architecture (RSA) of Arabidopsis (Arabidopsis thaliana) and how Pi levels modulate responses of the root to salt stress. Pi starvation reduced main root length and increased the number of lateral roots of Arabidopsis Columbia-0 seedlings. In combination with salt, low Pi dampened the inhibiting effect of mild salt stress (75 mM) on all measured RSA components. At higher salt concentrations, the Pi deprivation response prevailed over the salt stress only for lateral root elongation. The Pi deprivation response of lateral roots appeared to be oppositely affected by abscisic acid signaling compared with the salt stress response. Natural variation in the response to the combination treatment of salt and Pi starvation within 330 Arabidopsis accessions could be grouped into four response patterns. When exposed to double stress, in general, lateral roots prioritized responses to salt, while the effect on main root traits was additive. Interestingly, these patterns were not identical for all accessions studied, and multiple strategies to integrate the signals from Pi deprivation and salinity were identified. By genome-wide association mapping, 12 genomic loci were identified as putative factors integrating responses to salt stress and Pi starvation. From our experiments, we conclude that Pi starvation interferes with salt responses mainly at the level of lateral roots and that large natural variation exists in the available genetic repertoire of accessions to handle the combination of stresses.

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Section: Discussioncontrasting

confidence: 78%

Section: Root Responses To Double Stress Partly Rely On Rsa Phenotypementioning

confidence: 65%

Section: Supplemental Datamentioning

confidence: 72%

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

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Phosphate-dependent root system architecture responses to salt stress

et al. 2016

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“…For the selected associations (Supplemental Data Set 12), sequence information of 147 accessions belonging to the HapMap population was downloaded from the 1001 genomes project website (1001genomes.org) and aligned with ClustalO as described by Julkowska et al (2016).…”

Section: Gwas On Rsa Phenotypesmentioning

confidence: 99%