Unlocking the mysteries of leaf primordia formation

Cleland, Robert E.

doi:10.1073/pnas.211443498

Cited by 14 publications

(8 citation statements)

References 28 publications

(25 reference statements)

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“…Auxin and a localized protein called expansin are the key substances that are sufficient to induce a primordium and set into motion all the events needed to produce a mature leaf [6]. as a site of small cellular outgrowths, called leaf primordia that develop into the leaves.…”

Section: Leaf Culture or Primordial Culturementioning

confidence: 99%

Plant Tissue Culture

Bhatia¹

2015

Modern Applications of Plant Biotechnology in Pharmaceutical Sciences

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Section: Leaf Culture or Primordial Culturementioning

confidence: 99%

Plant Tissue Culture

Bhatia¹

2015

Modern Applications of Plant Biotechnology in Pharmaceutical Sciences

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“…The EXP expression increases in newly formed leaf primordia. Because its wall-loosening activity exhibits an acidic pH optimum, it is suggested that auxin accumulation in leaf primordia further increases the EXP activity ( McQueen-Mason and Cosgrove, 1994 ; Cleland, 2001 ). It was also reported that local application of exogenous EXP proteins as well as artificial expression of EXP induces leaf formation on the SAM ( Fleming et al, 1997 ).…”

Section: Cell Wall Loosening Proteins As Key Factors In Organ Formatimentioning

confidence: 99%

“…The resulting PIN1 localization facilitates transport of auxin into the wall-loosening cell (Figures 1B , C , right). Auxin, in turn, stimulates PME and EXP activities to further drive the cell wall loosening ( Cleland, 2001 ; Braybrook and Peaucelle, 2013 ; Figure 1C , right). Thus, PIN1 mediates this positive feedback to enhance both cell wall loosening and local auxin accumulation ( Braybrook and Peaucelle, 2013 ; Figures 1B , C , right).…”

Section: Cell Wall Loosening Changes Microtubule Orientation and Auximentioning

confidence: 99%

Cell walls as a stage for intercellular communication regulating shoot meristem development

et al. 2015

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Aboveground organs of plants are ultimately derived/generated from the shoot apical meristem (SAM), which is a proliferative tissue located at the apex of the stem. The SAM contains a population of stem cells that provide new cells for organ/tissue formation. The SAM is composed of distinct cell layers and zones with different properties. Primordia of lateral organs develop at the periphery of the SAM. The shoot apex is a dynamic and complex tissue, and as such intercellular communications among cells, layers and zones play significant roles in the coordination of cell proliferation, growth and differentiation to achieve elaborate morphogenesis. Recent findings have highlighted the importance of a number of signaling molecules acting in the cell wall space for the intercellular communication, including classic phytohormones and secretory peptides. Moreover, accumulating evidence has revealed that cell wall properties and their modifying enzymes modulate hormone actions. In this review, we outline how behaviors of signaling molecules and changes of cell wall properties are integrated for the shoot meristem regulation.

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“…The procambial strand theory and other chemical theories such as repulsion theory for leaf initiation invoke the presence of chemicals, promoting and inhibiting, and their interaction, which is controlled by one of many diffusionreaction mechanisms (Meinhardt 1984 ;Nelson and Dengler 1997 ). Several researchers have implicated the role of auxins in the regulation of phyllotaxis (see Cleland 2001 ;de Reuille et al 2006 ;Jönsson et al 2006 ;Braybrook and Kuhlemeir 2010 ). If the shoot apex of tomato is cultured on a synthetic medium containing auxin inhibitors, it does not produce any new leaf primordia (Reinhardt et al 2000 ), but once auxin is supplied to it, its leaf-producing ability is restored.…”

Section: Fig 52mentioning

confidence: 99%

Origin, Development and Differentiation of Leaves

Krishnamurthy

Bahadur

Adams

et al. 2015

Plant Biology and Biotechnology

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Leaves are the most important organs of plants and carry out very vital physiological activities such as photosynthesis, respiration, transpiration, photoreception and synthesis and supply of signal compounds, including growth regulators. They are always associated with shoot apical meristems from which they arise. Leaves are arranged on the stem with very characteristic and non-mutagenic phyllotactic pattern characteristic of each plant. The various theories to explain this pattern are briefl y described. The leaf primordia are initially with a leaf axis from which the lamina, petiole and phyllopodium regions of the mature leaf arise. This chapter deals with the genetic network that operates during various phases of leaf ontogeny. The genetic basis for shoot apical meristem (with indeterminate growth)-leaf primordium (with determinate growth) boundary is also discussed. This article also discusses the ontogenetic and genetic bases of the differences between simple and compound leaves. A short account each on heteroblasty, heterophylly, senescence and evolution of leaf is also provided.

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Unlocking the mysteries of leaf primordia formation

Cited by 14 publications

References 28 publications

Plant Tissue Culture

Plant Tissue Culture

Cell walls as a stage for intercellular communication regulating shoot meristem development

Origin, Development and Differentiation of Leaves

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