Drought is a major constraint on maize production, and understanding the underlying molecular regulators is key to breeding resilient varieties. Yang et al. investigated the role of the wall-associated kinase ZmWAK3 in maize seedlings and found it to be a negative regulator of drought tolerance. Loss-of-function mutants (zmwak3) survived drought stress better, showing higher photosynthetic […]
Producing completely homozygous lines in a single generation is crucial for accelerating hybrid breeding in crops like rapeseed (Brassica napus), yet conventional in vitro methods are time-consuming and genotype-sensitive. In this study, Bakhsh et al. developed an efficient in vivo haploid induction system by targeting GIGAS CELL1 (GIG1), a meiosis-related gene not previously used for […]
Improving photosynthesis under abiotic stress is essential for enhancing crop productivity. Here, Jiang et al. used short-term accelerated evolution in the cyanobacterium Synechococcus elongatus to uncover genetic mutations that enhance photosynthesis under salt and light stress without compromising growth. Using a hypermutator strain with conditionally suppressed DNA mismatch repair, the team conducted three rounds of […]
Seed germination is a critical developmental switch that depends not only on stored mRNA but also on the selective translation of these transcripts. In this study, Wang et al. explored how translational control of some genes can fine-tune the timing of germination. Using translation inhibitors and ribosome-defective mutants in Arabidopsis thaliana, the authors showed that […]
Salt stress can severely affect cotton (Gossypium hirsutum) productivity, especially during early growth. Cao et al. identified a molecular switch in cotton that fine-tunes responses to salt stress and the hormone abscisic acid (ABA), based on the reversible phosphorylation of the ABA signaling phosphatase GhABI1. The authors found that GhRAF36, a Raf-like protein kinase, phosphorylates […]
Mitochondria are vital energy-producing organelles that depend on precise RNA processing for function. In this study, Peng et al. identify PPR767, a mitochondria-localized E-type pentatricopeptide repeat (PPR) protein in rice, as a key regulator of plant architecture and drought tolerance. Loss-of-function mutants of PPR767 displayed stunted growth, thinner stems, narrower leaves, and reduced grain yield. […]
Kernel dehydration rate (KDR) is a critical factor affecting mechanized maize harvesting and kernel quality. Despite its agricultural importance, the molecular mechanisms regulating KDR remain unclear. Previous studies have identified several QTLs controlling KDR, but their functional characterization has been limited. Yu et al. investigate the genetic regulation of KDR by focusing on qKDR1, a […]
The genetic regulation of male fertility in Arabidopsis thaliana involves multiple factors, including ATP-Citrate Lyase (ACL), a key enzyme in cytoplasmic acetyl-CoA production. The thermosensitive male-sterile mutant reversible male sterile-2 (rvms-2) exhibits normal fertility at low temperatures but becomes male sterile at higher temperatures. This mutant shows defective exine formation and cytoplasmic leakage during pollen […]
The obligate biotrophic pathogen Blumeria graminis f. sp. tritici (Bgt) is the cause of wheat powdery mildew, a foliar disease that results in significant yield loss in most wheat-growing regions across the globe. This research focuses on the identification and functional analysis of the powdery mildew resistance gene Pm13, which was introgressed into wheat from […]