JISS1 expression in plants

Systemic immunity:
Star role for jasmonate

  • Trupti Gaikwad
  • Susan Breen
  • Murray Grant
Article

Announcements

  • Mycorrhizal fungi

    Tree species richness depends on climate, soil, and biotic factors. Mycorrhizal fungi, key tree mutualists, influence nutrient cycles and soil feedbacks. A recent study investigates how different mycorrhizal types shape global tree diversity patterns across environmental gradients.

  • Potato

    For a crop so humble in appearance, the potato hides an unexpected level of genetic complexity. Korbinian Schneeberger, team leader (MPIPZ, Germany), reached out to Maarten Koornneef (then director of MPIPZ), eager to test a new sequencing technology; he casually suggested the potato.

  • Pseudomonas

    Bacterial populations are often viewed as uniform entities, but isogenic cells can exhibit remarkable phenotypic heterogeneity. The plant pathogen, Pseudomonas syringae, leverages phenotypic heterogeneity to optimize infection through a sophisticated division of labour between subpopulations expressing flagella and the type III secretion system.

  • Rose creation

    A blooming rose is the result of thousands of years of domestication and natural evolution. Modern roses originate from as few as ten wild ancestors. This narrow genetic base poses a bottleneck to breeding efforts, which can be addressed by using the genetic diversity of wild Rosa species.

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  • The false smut fungus attacks rice by secreting a ‘weapon’ that targets a key protein in the plant’s flowers. This single move simultaneously stops the rice from making grains and shuts down its natural immune defences. The discovery of this strategy offers an opportunity to develop disease-resistant rice in the future.

    • Daiming Guo
    • Jing Fan
    News & Views
  • Photorespiration was long considered a futile cycle leading to a net carbon loss. However, evidence is accumulating that substantial metabolic benefits exist.

    Editorial
  • Heat stress threatens wheat productivity, necessitating genetic solutions for heat stress tolerance. We identified TaHST2, a key heat stress tolerance regulator, and demonstrated that intronic variations and epigenetic modifications silence TaHST2 in heat-tolerant wheat, probably as an adaptive consequence of hexaploidization and domestication.

    Research Briefing
  • A computational model based on early inflorescence development in wheat and rice has revealed how the timing of primordia initiation and meristem transition jointly shapes architectural diversity. It not only predicted independent mechanisms for ‘paired spikelet’ formation but also guided the identification of RA2-D, a gene that accelerates heading and can boost grain yield.

    Research Briefing
  • TaHST2 negatively regulates thermotolerance in wheat as it encodes a ubiquitin hydrolase that represses heat tolerance by stabilizing TaHSC701/702. During domestication, TaHST2 was progressively suppressed to select for improved thermotolerance.

    • Runqi Zhang
    • Guoyu Liu
    • Baoyun Li
    Article
  • We identify ZmMYB127 as a central regulator of maize endosperm filling, which executes dual transcriptional activities to coordinate development of the aleurone layer and nutrient accumulation in grain. This coordination enhances grain yield and quality, underscoring ZmMYB127 as a potential target for improving maize breeding.

    Research Briefing
  • An atlas of ~1 million Arabidopsis nuclei captures leaf development under drought stress. Drought advances leaf maturation transcriptional programmes in a dose-dependent manner. Mesophyll-specific FRO6 overexpression partially restores growth, revealing a link between stress and development.

    • Joseph Swift
    • Xuelin Wu
    • Joseph R. Ecker
    ArticleOpen Access
Light Micrograph (LM) of a transverse section of a root of Conifer (Pandanus sp.), magnification x30

Diffusion barriers in plants

This collection summarizes recent research progress in the biogenesis of plant diffusion barriers such as the Casparian strip, suberin lamellae or the root exodermis.
Collection

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