Plant Developmental and Reproductive Biology

Plant development and reproduction encompass a series of coordinated processes that transform a single-celled zygote into a multicellular organism capable of generating flowers, fruits and seeds. Central to these events are meristems – pools of pluripotent stem cells at shoot and root tips – which give rise to organs through regulated patterns of cell division, expansion and differentiation. Embryogenesis establishes apical–basal polarity and radial tissue layers, while post-embryonic growth integrates hormonal signals, notably auxin and gibberellins, with genetic networks to control organogenesis. The transition to flowering involves perception of environmental cues such as photoperiod and temperature, mediated by mobile proteins and transcription factors that reprogramme the shoot apical meristem into a floral meristem. Subsequent floral organ specification follows combinatorial gene regulation to form sepals, petals, stamens and carpels. Fruit morphogenesis and seed development then ensure propagation, with maternal and zygotic tissues adopting distinct developmental trajectories. Throughout, epigenetic modifications and chromatin remodelling refine gene expression programmes, while reproductive structures adapt to environmental variation, balancing yield, genetic diversity and ecosystem resilience.

Research from Nature Portfolio

Advanced biosensors built on engineered DELLA proteins have enabled real-time mapping of gibberellin signalling in the Arabidopsis shoot apical meristem. These ratiometric sensors revealed that cells destined to form internodes display the highest gibberellin responses and that gibberellin influences the orientation of cell division planes, thereby specifying internode identity. In parallel, studies have uncovered a novel role for nitric oxide in stem cell homeostasis: nitric oxide promotes ARGONAUTE4-dependent DNA methylation at specific loci under the control of the WUSCHEL transcription factor, fine-tuning stem cell maintenance. Further work on fruit development has shown that gynoecium shape is governed by two orthogonal, time-shifted differentiation gradients – an early mediolateral wave directing valve formation and a later longitudinal wave shaping the style. Together, these advances illuminate how precise spatial and temporal modulation of hormone perception, epigenetic state and transcriptional programmes coordinate plant organ specification.

Plant Developmental and Reproductive Biology publication trend

The graph below shows the total number of articles in plant developmental and reproductive biology across all publications each year (not limited to Nature Index journals).

Technical terms

Meristem: A region of undifferentiated plant cells that retains the capacity to divide and give rise to organs.

Apical–basal polarity: The developmental axis running from the shoot tip to the root tip, established during embryogenesis.

DELLA proteins: Growth-repressing transcriptional regulators degraded in the presence of gibberellins.

WUSCHEL: A homeodomain transcription factor that maintains stem cell identity in the shoot apical meristem.

Orthogonal differentiation gradients: Two spatially distinct waves of tissue maturation that intersect to shape an organ.

Ratiometric biosensor: A fusion protein whose fluorescence ratio reports local hormone concentration or signalling activity.

Pectin methylesterification: A modification of pectin in the cell wall that influences wall stiffness and cell expansion.

Silique: The seed pod characteristic of Brassicaceae, where fertilization and early seed growth occur.

References

1. A quantitative gibberellin signaling biosensor reveals a role for gibberellins in internode specification at the shoot apical meristem. Nature Communications (2024).
2. Nitric oxide controls shoot meristem activity via regulation of DNA methylation. Nature Communications (2023).
3. Two orthogonal differentiation gradients locally coordinate fruit morphogenesis. Nature Communications (2024).
4. Transcriptome and Physiological Analysis of Rapeseed Tolerance to Post-Flowering Temperature Increase. International Journal of Molecular Sciences (2023).
5. Ovule cell wall composition is a maternal determinant of grain size in barley. New Phytologist (2023).