Plant Reproductive Biology

PSI Atlas: a comprehensive knowledgebase of plant self-incompatibility

PSIA compiles genomic and sequence data on plant self-incompatibility, offering tools for analysis and comparative studies of S-loci across species.

Turgor pressure affects transverse stiffness and resonant frequencies of buzz-pollinated poricidal anther

The paper investigates how turgor pressure affects the mechanical properties of buzz-pollinated poricidal anthers, finding significant decreases in stiffness and resonant frequency after turgor loss.

The inner integument controls embryo sac development and seed shape in Arabidopsis thaliana

This study shows that the inner integument is essential for early embryo sac development and seed shape but not for embryo or endosperm development in Arabidopsis thaliana.

Structural Insights into Competitive Binding Dynamics between RALF23/33 and PCP-B in Brassicaceae Pollination

This study reveals the structural basis of competitive binding between RALF23/33 and PCP-B in Brassicaceae pollination using modeling and simulations.

Long-read sequencing reveals the allelic diversity of the self-incompatibility gene across natural populations in Petunia (Solanaceae)

The paper uses long-read sequencing to identify 62 S-RNase alleles in Petunia, including 45 novel types, and validates the method through sequencing and crossing experiments.

OsbHLH089 and OsbHLH094 Modulate OsSLR1 Levels to Maintain Male Reproductive Fitness in Rice

This study identifies OsbHLH089 and OsbHLH094 as regulators of OsSLR1 levels, which are critical for male reproductive fitness in rice.

Morphological and molecular effects of short-term water deficiency in barley stamen maturation

This study examines how short-term water deficiency impacts barley stamen maturation, finding reduced starch accumulation due to impaired carbon supply and altered gene expression.

Heat-Triggered Transcriptional Reprogramming in Microspores Disrupts Progression of Pollen Development in Brassica napus L.

This study shows that heat stress during the microspore stage in Brassica napus disrupts pollen development by altering transcriptional reprogramming and cell cycle control, leading to pollen abortion.

Disrupted Nitric Oxide Homeostasis Impacts Fertility Through Multiple Processes Including Protein Quality Control

The paper identifies S-nitrosated proteins in floral tissues of GSNOR mutants, revealing their role in protein quality control and fertility defects.

Enhanced pollen tube performance at high temperature contributes to thermotolerant fruit production in tomato.

This study identifies how enhanced pollen tube growth under high temperature contributes to thermotolerant fruit production in tomato by analyzing transcriptomic responses and key molecular mechanisms.

Widespread male sterility and trioecy in androdioecious Mercurialis annua: an account of its distribution, its genetic basis, and estimates of its morph-specific fitness components

This study documents trioecy in Mercurialis annua, identifies its genetic basis, and estimates fitness components of different sexes.

Brassinosteroids and Flavonols Confer Temperature Stress Tolerance to Pollen Tube Germination and Growth

This study shows that brassinosteroids and flavonols enhance pollen tube germination and growth under temperature stress by maintaining ROS homeostasis.

The polyketide pathway in sporopollenin biosynthesis is specific to land plants (Embryophyta)

This study defines sporopollenin (SP) as specific to embryophytes by showing all five polyketide pathway enzymes are present in embryophytes but absent in green algae.

Identification of novel genes responsible for a pollen killer present in local natural populations of Arabidopsis thaliana

The paper identifies two additional genes involved in a pollen killer system in Arabidopsis thaliana using CRISPR-Cas9 mutants and confirms structural variation across global populations.

The mitochondrial orf125 affects male fertility of Solanum tuberosum (+) S. commersonii somatic hybrids and participates in the onset of ''Tuberosum''-Type CMS and evolution of common potato

The paper identifies a mitochondrial gene orf125 linked to male sterility in potato hybrids and traces its evolutionary role in CMS development.

Mismatch between pollen and pistil size causes asymmetric mechanical reproductive isolation across Phlox species

The paper investigates how differences in style length between Phlox species create an asymmetric mechanical barrier to reproduction, reducing heterospecific seed set and revealing a link between pollen size and pollen tube growth.

Assessing male reproductive investment in Papaveraceae using flow cytometry reveals lineage-specific trajectories to pollen-to-ovule ratio reduction

The paper develops a flow cytometry protocol to quantify pollen in Papaveraceae species, revealing lineage-specific patterns in pollen-to-ovule ratio reduction.

The Pollen Tube Penetrates the Synergid Cell by Formation of a Peritubular Membrane

This study uses 3D live imaging in Arabidopsis to show that pollen tubes invade synergid cells by forming a peritubular membrane, with calcium signaling playing a key role in this process.

A mitochondria-targeted PPR protein restores cytoplasmic male sterility by post-transcriptional modification of ORF147 in Cajanus cajanifolius

The paper identifies a mitochondria-targeted PPR protein that restores fertility by modifying the CMS-associated orf147 mRNA in Cajanus cajanifolius.

Three pollen QTLs are sufficient to partially break stylar unilateral incompatibility of Solanum pennellii

This study identifies two new pollen UI QTLs in Solanum pennellii and shows that three pui QTLs together can partially break stylar unilateral incompatibility.

Molecular regulation of Bna1205ams1 required for male fertility and development of a recessive genic male-sterility system in Brassica napus

The paper identifies a gene, Bna1205ams1, responsible for male sterility in Brassica napus and develops a new genic male sterility system for hybrid production.

The RALF Signaling Pathway Regulates Cell Wall Integrity during Pollen Tube Growth in Maize

The study identifies the role of Clade IB ZmRALF2/3 in regulating cell wall integrity during maize pollen tube growth through interactions with receptor kinases, co-receptors, and cell wall proteins.

Phase separation of S-RNase promotes self-incompatibility in Petunia hybrida

The paper shows that phase separation of S-RNase forms condensates in Petunia hybrida pollen tubes, which are necessary for self-incompatibility by inhibiting pollen tube growth.

A practical method to improve the efficiency of pollination in maize breeding and genetics research

This paper describes a method to extend maize pollen viability and increase pollination efficiency by storing pollen mixed with a PEEK substrate at 6°C for up to nine days.

Genetic interaction between two unlinked loci underlies the loss of self-incompatibility in Arabidopsis lyrata

The paper identifies a two-locus genetic model for the loss of self-incompatibility in Arabidopsis lyrata through intercrossing populations and analyzing progeny breeding systems.

Genetic and environmental manipulation of Arabidopsis hybridization barriers uncover antagonistic functions in endosperm cellularization

The paper identifies a genetic locus and environmental factors that influence endosperm cellularization in Arabidopsis hybrids, affecting seed viability and hybridization barriers.

Syntaxin of plants 32 regulates pollen wall development and pollen tube cell wall integrity via controlling secretory pathway

This study identifies AtSYP32's role in regulating pollen wall development and pollen tube cell wall integrity by controlling secretory pathways through interactions with vesicle transport regulators and cell wall biosynthesis factors.

Comprehensive computational analysis of the SRK-SP11 molecular interaction underlying self-incompatibility in Brassicaceae using improved structure prediction for cysteine-rich proteins

The paper improves structure prediction for cysteine-rich proteins in Brassicaceae and analyzes eSRK-SP11 binding modes across haplotypes.

The Arabidopsis ARID-HMG protein AtHMGB15 modulates JA signalling by regulating MYC2 during pollen development

This study shows that AtHMGB15 regulates JA signalling by interacting with MYC2 during pollen development, affecting pollen morphology and viability.

Rice GLUCAN SYNTHASE-LIKE5 promotes Callose deposition in Anthers to maintain proper Male Meiosis Initiation and Progression

This study identifies OsGSL5 as a callose synthase in rice anthers, showing its role in regulating meiosis initiation and progression by controlling callose deposition.