The plant stomatal lineage manifests features common to many developmental contexts: precursor cells are chosen from an initially equivalent field of cells, undergo asymmetric and self-renewing divisions, communicate among themselves and respond to information from a distance. As we review here, the experimental accessibility of these epidermal lineages, particularly in Arabidopsis, has made stomata a conceptual and technical framework for the study of cell fate, stem cells, and cell polarity in plants.
"These multiple constraints of water and nutrient availability, together with predicted climate instability pose a serious threat to food security (Poppy et al., 2014). Over the past decade the signaling pathway that controls the formation of stomata (the microscopic leaf pores that control E) has become better understood (Casson & Gray, 2008; Lau & Bergmann, 2012; Pillitteri & Torii, 2012). This knowledge allows us to study the physiological implications of altering stomatal density (D) within plants of the same genetic background. "
"We also touch briefly on environmental factors that can impact leaf development (see Box 2), and on recently developed quantitative approaches (see Box 3), which can serve to further characterize and understand leaf development. We chose not to discuss adaxial-abaxial, vascular, trichome or stomatal patterning, as several recent reviews have discussed these topics (Grebe, 2012; Kidner and Timmermans, 2010; Lau and Bergmann, 2012; Nakata and Okada, 2013; Sack and Scoffoni, 2013). "
[Show abstract][Hide abstract] ABSTRACT: Plant leaves develop in accordance with a common basic program, which is flexibly adjusted to the species, developmental stage and environment. Two key stages of leaf development are morphogenesis and differentiation. In the case of compound leaves, the morphogenesis stage is prolonged as compared to simple leaves, allowing for the initiation of leaflets. Here, we review recent advances in the understanding of how plant hormones and transcriptional regulators modulate compound leaf development, yielding a substantial diversity of leaf forms, focusing on four model compound leaf organisms: cardamine (Cardamine hirsuta), tomato (Solanum lycopersicum), medicago (Medicago truncatula) and pea (Pisum sativum).
Current Opinion in Plant Biology 02/2015; 23. DOI:10.1016/j.pbi.2014.10.007 · 7.85 Impact Factor
"Arabidopsis stomatal development involves the secreted peptide ligands such as EPIDERMAL PATERNING FACTORS (i.e. EPF1, EPF2, STOMAGEN, CHALLAH), as well as signals received by TOO MANY MOUTHS (TMM) and the ERECTA family of receptors (Nadeau, 2009; Lau and Bergmann, 2012). These signals are in turn transduced via a mitogen-activated protein kinase (MAPK) cascade, which includes YODA (YDA), MKK4/5/7/9, and MPK3/ 6 (Bergmann et al., 2004; Wang et al., 2007). "
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