Establishing asymmetry: stomatal division and differentiation in plants

Guo, Xiaoyu; Wang, Lu; Dong, Juan

doi:10.1111/nph.17613

Cited by 35 publications

(27 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the Arabidopsis stomatal lineage, cell polarity and cytoskeleton-mediated nuclear migration and ACDs are regulated by a different set of polarity genes ( Guo et al, 2021b ; Muroyama and Bergmann, 2019 ; Ramalho et al, 2022 ). Breaking of asymmetry in the stomatal lineage (BASL), a dicot-specific protein, serves as an intrinsic polarity factor to regulate ACDs of meristemoid mother cells and forms a polarity crescent distal to the division plane ( Dong et al, 2009 ; Nir et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Opposite polarity programs regulate asymmetric subsidiary cell divisions in grasses

Zhang

Spiegelhalder

Abrash

et al. 2022

eLife

View full text Add to dashboard Cite

Grass stomata recruit lateral subsidiary cells (SCs), which are key to the unique stomatal morphology and the efficient plant-atmosphere gas exchange in grasses. Subsidiary mother cells (SMCs) strongly polarise before an asymmetric division forms a SC. Yet apart from a proximal polarity module that includes PANGLOSS1 (PAN1) and guides nuclear migration, little is known regarding the developmental processes that form SCs. Here, we used comparative transcriptomics of developing wild-type and SC-less bdmute leaves in the genetic model grass Brachypodium distachyon to identify novel factors involved in SC formation. This approach revealed BdPOLAR, which forms a novel, distal polarity domain in SMCs that is opposite to the proximal PAN1 domain. Both polarity domains are required for the formative SC division yet exhibit various roles in guiding pre-mitotic nuclear migration and SMC division plane orientation, respectively. Nonetheless, the domains are linked as the proximal domain controls polarisation of the distal domain. In summary, we identified two opposing polarity domains that coordinate the SC division, a process crucial for grass stomatal physiology.

show abstract

Section: Introductionmentioning

confidence: 99%

Opposite polarity programs regulate asymmetric subsidiary cell divisions in grasses

Zhang

Spiegelhalder

Abrash

et al. 2022

eLife

View full text Add to dashboard Cite

show abstract

“…In the Arabidopsis stomatal lineage, cell polarity and cytoskeleton-mediated nuclear migration and ACDs are regulated by a different set of polarity genes (Guo et al, 2021a; Muroyama and Bergmann, 2019; Ramalho et al, 2022). BREAKING OF ASYMMETRY IN THE STOMATAL LINEAGE (BASL), a dicot-specific protein, serves as an intrinsic polarity factor to regulate ACDs of meristemoid mother cells (MMCs) and forms a polarity crescent distal to the division plane (Dong et al, 2009).…”

mentioning

confidence: 99%

“…BASL promotes polarisation of BREVIS RADIX (BRX) family proteins and POLAR LOCALIZATION DURING ASYMMETRIC DIVISION AND REDISTRIBUTION (POLAR) within its own polarity domain (Pillitteri et al, 2011; Rowe et al, 2019). The Arabidopsis polarity proteins can scaffold kinases to regulate cell division capacity, fate asymmetry and nuclear migration (Guo et al, 2021a; Muroyama and Bergmann, 2019). POLAR recruits the glycogen synthase kinase 3 (GSK3)-like kinase BIN2 to regulate cell division capacity (Houbaert et al, 2018), whereas a positive-feedback loop between BASL and the mitogen-activated protein kinase (MAPK) pathway is essential for enforcing different cell fates after ACD (Zhang et al, 2015).…”

mentioning

confidence: 99%

Opposite polarity programs regulate asymmetric subsidiary cell divisions in grasses

Zhang

Abrash

Nunes

et al. 2022

Preprint

View full text Add to dashboard Cite

Grass stomata recruit lateral subsidiary cells (SCs), which are key to the unique stomatal morphology and the efficient plant-atmosphere gas exchange in grasses. Subsidiary mother cells (SMCs) strongly polarise before an asymmetric division forms a SC. Yet apart from a proximal polarity module that includes PANGLOSS1 (PAN1) and guides nuclear migration, little is known regarding the developmental processes that form SCs. Using the genetic model grass Brachypodium distachyon, we identified BdPOLAR, which forms a novel, distal polarity domain in SMCs that is reciprocal to the proximal PAN1 domain. Both polarity domains are required for the formative SC division yet exhibit distinct roles in regulating pre-mitotic nuclear migration and SMC division plane orientation, respectively. Nonetheless, the domains are linked as the proximal domain controls polarisation of the distal domain. In summary, we identified two opposing polarity domains that coordinate the SC division, a process crucial for grass stomatal physiology.

show abstract

“…In monocots, where stomata develop in rows flanking parallel veins, once the stomatal cell file is established, cells divide asymmetrically to form a larger interstomatal sister cell and a GMC ( Stebbins and Shah, 1960 ; McKown and Bergmann, 2020 ; Nunes et al, 2020 ). In both cases, once established, the GMC differentiates and divides symmetrically into the stomatal guard cell pair ( Conklin et al, 2019 ; McKown and Bergmann, 2020 ; Nunes et al, 2020 ; Guo et al, 2021 ). Consistent with its role in asymmetric cell divisions in root development, it has been suggested that SCR may be required for stomatal patterning in rice ( Kamiya et al, 2003 ; Wu et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

SCARECROW is deployed in distinct contexts during rice and maize leaf development

Hughes

Langdale

2022

Development

View full text Add to dashboard Cite

The flexible deployment of developmental regulators is an increasingly appreciated aspect of plant development and evolution. The GRAS transcription factor SCARECROW (SCR) regulates the development of the endodermis in Arabidopsis and maize roots, but during leaf development it regulates the development of distinct cell-types; bundle-sheath in Arabidopsis and mesophyll in maize. In rice, SCR is implicated in stomatal patterning, but it is unknown whether this function is additional to a role in inner leaf patterning. Here, we demonstrate that two duplicated SCR genes function redundantly in rice. Contrary to previous reports, we show that these genes are necessary for stomatal development, with stomata virtually absent from leaves that are initiated after germination of mutants. The stomatal regulator OsMUTE is down-regulated in Osscr1;Osscr2 mutants indicating that OsSCR acts early in stomatal development. Notably, Osscr1;Osscr2 mutants do not exhibit the inner leaf patterning perturbations seen in Zmscr1;Zmscr1h mutants and Zmscr1;Zmscr1h mutants do not exhibit major perturbations in stomatal patterning. Taken together, these results indicate that SCR was deployed in different developmental contexts after the divergence of rice and maize around 50 million years ago.

show abstract

Establishing asymmetry: stomatal division and differentiation in plants

Cited by 35 publications

References 54 publications

Opposite polarity programs regulate asymmetric subsidiary cell divisions in grasses

Opposite polarity programs regulate asymmetric subsidiary cell divisions in grasses

Opposite polarity programs regulate asymmetric subsidiary cell divisions in grasses

SCARECROW is deployed in distinct contexts during rice and maize leaf development

Contact Info

Product

Resources

About