Tag: Plant Reproduction

Flowering at the right time is essential for plants to balance vegetative growth and reproduction. In Arabidopsis, long days induce CONSTANS (CO) to activate the transcription of FLOWERING LOCUS T (FT) in leaves. FT protein then moves to the shoot apex, where it associates with a bZIP transcription factor…

Meiosis, the process of generating gametes in sexually reproducing organisms, typically includes the shuffling of genetic information between homologous chromosomes from each parent. This process leads to the exchange of DNA between these chromosomes, ultimately contributing to greater genetic diversity…

In plants, maternal inheritance of mitochondria is a common phenomenon, resulting from the elimination of paternal mitochondrial DNA during pollen development or by the degradation of paternal mitochondria after fertilization. A recent study by Aini et al. provides new insights into the fate of paternal…

Plants need to carefully control which genes are active as they grow and switch from one developmental stage to another. A new study by Geshkovski et al. reveals that ULTRAPETALA1 (ULT1), previously thought to mainly counteract gene silencing, can also promote gene silencing by working directly with…

For successful fertilization, sperm must reach the egg. Most land plants deliver non-motile sperm through a pollen tube. However, the liverwort Marchantia polymorpha retains the ancestral form of fertilization, sperm that are motile and use flagella to swim towards the egg. This process offers a unique…

The inflorescence meristem is the tiny structure that is  foundational to most of our food supply. A new work by Moreno-Ramírez et al. reveals insights into these little marvels through the use of single-nucleus transcriptomics. Their analysis identified 18 cell-type clusters that they assigned to…

Crops such as rice usually flower in the late morning when the ambient temperature rises. Rice plants briefly open their flowers so the mature anthers hang out. However, heat stress can trigger abnormal anther dehiscence, flower infertility, and subsequent yield reduction. Early-morning flowering…

Scientists have been curious as to how the shoot meristem maintains two adjacent cell populations that respond oppositely to the same systemic flowering signal. In this study by Huang et al., the authors reveal that LEAFY (LFY) transcription factor directly binds to the DNA of TERMINAL FLOWER1 (TFL1)…