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Issue Cover
Volume 69, Issue 7
16 March 2018
ISSN 0022-0957
EISSN 1460-2431

eXtra Botany

Insight

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1433–1436, https://doi.org/10.1093/jxb/ery042

This article comments on:

Flam-Shepherd R, Huynh WQ, Coskun D, Hamam AM, Britto DT, Kronzucker HJ. 2018. Membrane fluxes, bypass flows, and sodium stress in rice: the influence of silicon. Journal of Experimental Botany 69, 1679–1692.

DARWIN REVIEW

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1437–1446, https://doi.org/10.1093/jxb/erx493

We review the evidence that intrinsically disordered proteins played a pivotal role in the evolution of cell type specialization and multicellularity across all major eukaryotic clades.

FLOWERING NEWSLETTER REVIEW

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1447–1469, https://doi.org/10.1093/jxb/erx479

MADS-box genes are major domestication genes involved in a plethora of developmental processes. They might be ideally suited for future targeted breeding efforts.

RESEARCH PAPERS

Cell Biology

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1471–1484, https://doi.org/10.1093/jxb/ery024

Glucose-triggered stomatal closure is dependent on basal ABA signaling through PYR/RCAR receptors, CDPK6, and glucose signaling mediated by hexokinase1 (HXK1) in Arabidopsis.

Crop Molecular Genetics

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1485–1498, https://doi.org/10.1093/jxb/ery001

The C–S–A gene system determines rice hull pigmentation. A conserved color-producing model reveals the independent origin and evolution of the anthocyanin biosynthesis pathway in rice.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1499–1516, https://doi.org/10.1093/jxb/erx490

Identifying and exploiting three informative DNA variant segregation types in pooled genome sequencing analysis of the weeping phenotype in Malus empowers an effective genetic mapping strategy in out-crossing woody species.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1517–1531, https://doi.org/10.1093/jxb/ery002

Plant development in a barley nested association mapping population is controlled by interacting genotypic (wild donor alleles) and environmental (geographical location) effects.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1533–1543, https://doi.org/10.1093/jxb/ery017

Plant architecture affects grain yield. Overexpressing a version of OsNAC2 resistant to miRNA-mediated degradation increased panicle number and grain yield under field conditions, identifying a new strategy to improve yield.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1545–1555, https://doi.org/10.1093/jxb/ery021

Using genetics, genomics, and diagnostic RenSeq, we demonstrate that the major NB-LRR gene R8 explains the field resistance against potato late blight in the QTL dPI09c

Growth and Development

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1557–1568, https://doi.org/10.1093/jxb/erx491

The stromal Clp protease complex influences chromoplast differentiation and ensures proper carotenoid metabolism during tomato fruit ripening, probably in co-ordination with plastidial chaperones.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1569–1582, https://doi.org/10.1093/jxb/erx488

A leucine-rich repeat receptor-like kinase in strawberry, FaRIPK1, interacts with a putative ABA receptor, FaABAR, and forms a newly identified ABA signaling pathway involved in the regulation of fruit ripening.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1583–1597, https://doi.org/10.1093/jxb/erx492

Integrative analysis of developing coffee seeds reveals the key cellular, metabolic, and regulatory processes associated with acquisition of desiccation tolerance in intermediate seeds

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1599–1613, https://doi.org/10.1093/jxb/ery013

Manually delaying pollination in maize restricted kernel growth and induced abortion by suppressing cell wall invertase activity and repartitioning assimilates.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1615–1633, https://doi.org/10.1093/jxb/ery015

Two of the Arabidopsis thaliana SEC23 homologs, AtSEC23A and AtSEC23D, are expressed in the tapetum and play essential roles in pollen wall formation, exine patterning, and tapetum development.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1635–1648, https://doi.org/10.1093/jxb/ery022

Gibberellin has an inhibitory effect during initial activation of dormant grapevine buds, and at this stage its level is down-regulated. At a later stage, gibberellin level increases and enhances bud regrowth.

Photosynthesis and Metabolism

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1649–1661, https://doi.org/10.1093/jxb/erx483

We report the involvement of quebrachitol in photosynthate transport and stress response, and characterize an inositol methyltransferase gene involved in the biosynthesis of bornesitol, the methylated intermediate of quebrachitol.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1663–1678, https://doi.org/10.1093/jxb/erx484

SmJAZ8 regulates the biosynthesis of salvianolic acids and tanshinones simultaneously by repressing the transcription factors and biosynthetic pathway genes in Salvia miltiorrhiza hairy roots.

Plant—Environment Interactions

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1679–1692, https://doi.org/10.1093/jxb/erx460

Silicon reduces rice shoot sodium accumulation by blocking transpirational bypass flow or increasing shoot growth, but does not affect transmembrane Na+ fluxes or the rapid Na+ influx–efflux cycle in roots.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1693–1705, https://doi.org/10.1093/jxb/erx495

Targeted metabolomics, analyses of commercial hybrids, and mutant genotypes infected with diverse pathogenic fungi reveal dynamic roles for sesqui- and diterpenoid phytoalexins in maize defense.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1707–1719, https://doi.org/10.1093/jxb/erx496

Anatomical, physiological, and molecular analysis revealed that yield losses in nitrogen-deficient maize were more closely associated with limited capacity of sugar utilization in developing ears than sucrose export from leaves.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1721–1733, https://doi.org/10.1093/jxb/ery004

High night temperature lowers the total fatty acids of seed and increases the proportion of 18-carbon unsaturated fatty acids by enhancing gibberellin signaling and the activity of the genes involved in fatty acid catabolism.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1735–1748, https://doi.org/10.1093/jxb/ery005

A strongly iron-responsive gene of previously unknown function, At3g12900, encodes a scopoletin 8-hydroxylase involved in coumarin biosynthesis, and plays an important role in the iron uptake strategy of Arabidopsis.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1749–1764, https://doi.org/10.1093/jxb/ery020

The stress-responsive AQUILO gene regulates the expression of GoLS genes and improves cold tolerance in association with the increase of raffinose family oligosaccharides.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1765–1779, https://doi.org/10.1093/jxb/ery016

The wild barley HsDry2.2 allele confers a reproductive advantage that is independent of flowering time under drought conditions and is manifested through modifications in shoot morphology, reduced senescence, and longer grain filling.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1781–1794, https://doi.org/10.1093/jxb/ery027

Arabidopsis exposed to dioxin pollutants led to wrinkled seeds with reduced oil content, due to increased expression of 20S proteasome components and substantial degradation of the transcription factor WRI1.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1795–1803, https://doi.org/10.1093/jxb/ery018

Screening Arabidopsis mutants for sensitivity to low-Mn conditions identifies novel alleles for NRAMP1, a previously known Mn transporter, and PGSIP6, a phosphorylceramide glucuronosyltransferase.

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1805–1814, https://doi.org/10.1093/jxb/ery019

Crop yield losses are influenced by the sex ratio of cyst nematodes. Expression of an Arabidopsis senescence-associated gene (AtS40-3) is positively associated with female-biased cyst nematode sex ratio.

CORRIGENDA

Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1815, https://doi.org/10.1093/jxb/erx466
Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1817, https://doi.org/10.1093/jxb/ery003
Journal of Experimental Botany, Volume 69, Issue 7, 24 March 2018, Pages 1819, https://doi.org/10.1093/jxb/ery006
  • Cover Image

    Cover Image

    issue cover
    Cover illustration: Tomato (Solanum lycopersicum) fruit halves illuminated with ultraviolet light. Tomato fruits undergo profound metabolic changes during ripening. Green fruits lose their chlorophyll and accumulate large amounts of health-promoting carotenoid pigments such as lycopene and pro-vitamin A beta-carotene, eventually acquiring their characteristic red colour when ripe. Ripening involves the differentiation of chloroplasts into carotenoid-accumulating chromoplasts. In this issue, D’Andrea et al. pp. 1557–1568 report the identification of specific proteases and chaperones that control the differentiation of chromoplasts and the accumulation of active carotenoid biosynthetic enzymes in tomato fruit. Image by Miguel Simon-Moya and Manuel Rodriguez-Concepcion.
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