What shoots can teach about theories of plant form

Vernoux, Teva; Besnard, Fabrice; Godin, Christophe

doi:10.1038/s41477-021-00930-0

Cited by 12 publications

(7 citation statements)

References 105 publications

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“…We have mentioned in section 2 the fact that mechanical stresses have been proposed to regulate PIN polarities. These mechanical stresses result from the shape of the tissue as well as growth and the changes in shape that can occur during development (For review: (138)). Mechanical stresses, transmitted to neighboring cells and acting on the orientation of microtubules, can explain a flux-based behavior of PIN in both the shoot and root apical meristem (53,82) and robustness of auxin distribution (29).…”

Section: Auxin Cross-talks With Many Hormones and Other Developmental...mentioning

confidence: 99%

Decoding the Auxin Matrix: Auxin Biology Through the Eye of the Computer

Martín-Arevalillo

Vernoux

2023

Annu. Rev. Plant Biol.

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The plant hormone auxin is certainly the most studied developmental regulator in plants. The many functions of auxin during development, from the embryo to the root and shoot construction, are mediated by an ever-growing collection of molecular regulators, with an overwhelming degree of both ubiquity and complexity that we are still far from fully understanding and that biological experiments alone cannot grasp. In this review, we discuss how bioinformatics and computational modeling approaches have helped in recent years to explore this complexity and to push the frontiers of our understanding of auxin biology. We focus on how analysis of massive amounts of genomic data and construction of computational models to simulate auxin-regulated processes at different scales have complemented wet experiments to increase the understanding of how auxin acts in the nucleus to regulate transcription and how auxin movement between cells regulates development at the tissular scale. Expected final online publication date for the Annual Review of Plant Biology, Volume 74 is May 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Section: Auxin Cross-talks With Many Hormones and Other Developmental...mentioning

confidence: 99%

Decoding the Auxin Matrix: Auxin Biology Through the Eye of the Computer

Martín-Arevalillo

Vernoux

2023

Annu. Rev. Plant Biol.

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“…Given that epidermal auxin convergence points were proposed as the trigger for auxin movement into internal cells (Scarpella et al ., 2006), but recent experiments revealed that they are neither necessary or sufficient for midvein formation in Arabidopsis (Govindaraju et al ., 2020; Lavania et al ., 2021), unknown components of auxin flux mechanisms obviously exist. In this context, both experimental and modelling approaches have suggested that mechanical stresses mediated by microtubule and cellulose microfibril dynamics play a role in both UTG and WTF movement of auxin, and it is becoming increasingly clear that the significance of auxin‐driven reorientation of PIN1 proteins during leaf primordium and midvein formation needs to be reevaluated in a more complex framework than previously considered (recently discussed and reviewed in Heisler, 2021; ten Tusscher, 2021; Vernoux et al ., 2021).…”

Section: Ontogeny Of Leaf Veinsmentioning

confidence: 99%

Developmental regulation of leaf venation patterns: monocot versus eudicots and the role of auxin

2022

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Summary Organisation and patterning of the vascular network in land plants varies in different taxonomic, developmental and environmental contexts. In leaves, the degree of vascular strand connectivity influences both light and CO2 harvesting capabilities as well as hydraulic capacity. As such, developmental mechanisms that regulate leaf venation patterning have a direct impact on physiological performance. Development of the leaf venation network requires the specification of procambial cells within the ground meristem of the primordium and subsequent proliferation and differentiation of the procambial lineage to form vascular strands. An understanding of how diverse venation patterns are manifest therefore requires mechanistic insight into how procambium is dynamically specified in a growing leaf. A role for auxin in this process was identified many years ago, but questions remain. In this review we first provide an overview of the diverse venation patterns that exist in land plants, providing an evolutionary perspective. We then focus on the developmental regulation of leaf venation patterns in angiosperms, comparing patterning in eudicots and monocots, and the role of auxin in each case. Although common themes emerge, we conclude that the developmental mechanisms elucidated in eudicots are unlikely to fully explain how parallel venation patterns in monocot leaves are elaborated.

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“…The SAM is the source of all cells that ultimately form the above-ground architecture of plants, including the subset that ends up building the leaves ( Vernoux et al, 2021 ). The homeobox gene WUSCHEL ( WUS ), which is specifically expressed in the organizing center of the SAM, plays a central role in the formation and maintenance of the shoot meristem activity ( Schoof et al, 2000 ); loss-of-function mutations in WUS result in the misspecification of stem cells and the premature termination of meristem activity ( Lenhard et al, 2001 ).…”

Section: Leaf Initiationmentioning

confidence: 99%

The Genetic Control of the Compound Leaf Patterning in Medicago truncatula

Liu

et al. 2022

Front. Plant Sci.

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Simple and compound which are the two basic types of leaves are distinguished by the pattern of the distribution of blades on the petiole. Compared to simple leaves comprising a single blade, compound leaves have multiple blade units and exhibit more complex and diverse patterns of organ organization, and the molecular mechanisms underlying their pattern formation are receiving more and more attention in recent years. Studies in model legume Medicago truncatula have led to an improved understanding of the genetic control of the compound leaf patterning. This review is an attempt to summarize the current knowledge about the compound leaf morphogenesis of M. truncatula, with a focus on the molecular mechanisms involved in pattern formation. It also includes some comparisons of the molecular mechanisms between leaf morphogenesis of different model species and offers useful information for the molecular design of legume crops.

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What shoots can teach about theories of plant form

Cited by 12 publications

References 105 publications

Decoding the Auxin Matrix: Auxin Biology Through the Eye of the Computer

Decoding the Auxin Matrix: Auxin Biology Through the Eye of the Computer

Developmental regulation of leaf venation patterns: monocot versus eudicots and the role of auxin

The Genetic Control of the Compound Leaf Patterning in Medicago truncatula

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