Recent Posts

Evolution of vascular plants through redeployment of ancient developmental regulators (bioRxiv)

Land plants (Tracheophytes), utilize the well-developed vascular tissue for conducting water and other nutrients necessary for plant growth. In Arabidopsis and other land plants, the key player of vascular cell division is well characterized and this includes the TMO5-LHW (TARGET OF MONOPTEROS 5 –…

Embryo protection after germination in date palm (Plant Cell)

Plant morphogenesis is a dynamic process that can be modulated in response to environmental cues. In this work, Xiao et al. characterized germination and seedling development in date palm. After germination, the cotyledonary petiole grows, but the embryo development is paused. At early stages of development…

Alternative usage of miRNA-biogenesis co-factors in plants at low temperatures (Development)

As in animals, plants produce microRNAs that are also key developmental regulators. Unlike some animals, plants are more exposed to environmental factors that alter cellular processes. Ré et al. show here that phenotypic defects produced by loss-of-function mutations in key proteins of Arabidopsis miRNA…

Low oxygen levels are needed to regulate shoot meristem activity (Nature)

Little is known about the stimuli that regulate time intervals for new leaves production (plastochrone) at the shoot apical meristem (SAM). Oxygen is a diffusible molecule with potential to regulate this process. The use of a micro-scale Clark-type oxygen electrode allowed Weits et al. to measure oxygen…

Land plants recruited an ancestral bHLH for tip-growing surface cell development ($) (New Phytol)

Land plants (embryophytes) evolved from freshwater charophycean algae over 450 million years ago. The transition from aquatic to terrestrial environments likely required the evolution and expansion of genetic programs controlling three dimensional growth and the formation of tip-growing surface cells…

How Plants Adapt to Different Temperatures

Méndez-Vigo et al. explore how plants from different world regions adapt to different temperature conditions. Plant Cell https://doi.org/10.1105/tpc.18.00938.    By Belen Méndez-Vigo and Carlos Alonso-Blanco  Background:  Plants adapt to seasonal and yearly fluctuations in ambient temperature…

A jasmonate signaling network activates root stem cells and promotes regeneration ($) (Cell)

Plants possess plasticity for regeneration of organs after damage by physical, biotic or abiotic stress. The mitotically less-active organizer cells, quiescent center (QC) and surrounding initials form the stem cell niche, which is known to play a very important role in activation of the regeneration…

Genetic compensation mechanisms for maintaining plant stem cell robustness ($) (Nature Genetics)

In shoot meristems, the CLAVATA (CLV)-WUSCHEL(WUS) signaling module contributes to the continuous stem cell proliferation for plant development. In Arabidopsis, core CLV-WUS signaling includes the peptide ligand CLV3 and its receptor protein kinase CLV1 together with the transcription factor WUS. These…

Review. Multicellular systems biology: Applying network science to plant organ patterning and function (Mol Plant)

I really enjoyed this review article, which very successfully introduces the reader to the why and how of how to apply network science to plant science. Bassel never veers off into abstraction or “math-speak”, but instead roots his explanations in familiar biological or ordinary terms. As an example,…