Field Guide to Plant Model Systems

Chang, Caren; Bowman, John L.; Meyerowitz, Elliot M.

doi:10.1016/j.cell.2016.08.031

Cited by 108 publications

(86 citation statements)

References 162 publications

(177 reference statements)

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“…Progress in technology development, in particular, advanced DNA sequencing methods, will also greatly facilitate already ongoing efforts (for summary, see Chang et al, 2016) to establish additional model plants for flowering research. The establishment of such additional models is of pivotal importance not only because they may provide information on the reproductive biology of a wide range of agriculturally important plants but also because they will allow us to better address the evolutionary mechanisms that act on flower development.…”

Section: Discussionmentioning

confidence: 99%

Floral Organogenesis: When Knowing Your ABCs Is Not Enough

2016

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Flower development is one of the particularly wellestablished model systems for investigating the molecular and genetic mechanisms underlying organogenesis in plants. Over the past 30 years, this work has led to detailed insights into many of the cellular and developmental processes that occur during the formation of flowers. This progress was made possible especially by the identification and characterization of the floral organ identity factors, which specify the different floral organ types in a combinatorial manner. However, in recent years, the genes that act downstream of these master regulators have taken center stage because it has become increasingly clear that they execute many of the functions originally attributed to the floral organ identity factors. In this Update, we will summarize and discuss our current view of floral organogenesis with particular emphasis on recent progress in the field (see "Advances" box). We will briefly describe the latest models for floral organ identity factor function and outline open questions that need to be addressed to better understand how they act at the mechanistic level. Furthermore, we will discuss studies that have begun to reveal how a complex interplay of transcription factors, hormones, regulatory RNAs, and epigenetic modifiers controls different developmental processes during the formation of flowers. Last, we will outline recent efforts to better understand the evolution of flowers and venture a look ahead at likely future developments in the field of flowering research.

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Section: Discussionmentioning

confidence: 99%

Floral Organogenesis: When Knowing Your ABCs Is Not Enough

2016

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“…Transformation protocols are also being developed (Abe et al ., ; Vannerum et al ., ; Sørensen et al ., ). Streptophyte algae are thus gradually emerging as useful model systems (Chang et al ., ) with which to test hypotheses about the genetic underpinnings of land plant evolution. If the past decade is any indication, the next 10 years should be full of surprises.…”

Section: Conclusion: a Streptophyte Algal Perspective On Land Plant mentioning

confidence: 99%

Plant evolution: landmarks on the path to terrestrial life

2018

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a streptophyte algal perspective on land plant trait evolution 1432 Acknowledgements 1432 ORCID 1433 References 1433 SUMMARY: Photosynthetic eukaryotes thrive anywhere there is sunlight and water. But while such organisms are exceptionally diverse in form and function, only one phototrophic lineage succeeded in rising above its substrate: the land plants (embryophytes). Molecular phylogenetic data show that land plants evolved from streptophyte algae most closely related to extant Zygnematophyceae, and one of the principal aims of plant evolutionary biology is to uncover the key features of such algae that enabled this important transition. At the present time, however, mosaic and reductive evolution blur our picture of the closest algal ancestors of plants. Here we discuss recent progress and problems in inferring the biology of the algal progenitor of the terrestrial photosynthetic macrobiome.

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“…In addition to emerging as a novel system for evo‐devo studies (cf. Chang, Bowman, & Meyerowitz, ; de Vries, Fischer, et al, ; F. ‐W. Li & Pryer, ; Sessa et al, ), Azolla is best‐known for its unique symbiosis (Carrapiço, ; Rai et al, ; Ran et al, ).…”

Section: Discussionmentioning

confidence: 99%

Jasmonic and salicylic acid response in the fern Azolla filiculoides and its cyanobiont

Vries

Teschke

et al. 2018

Plant Cell & Environment

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Plants sense and respond to microbes utilizing a multilayered signalling cascade. In seed plants, the phytohormones jasmonic and salicylic acid (JA and SA) are key denominators of how plants respond to certain microbes. Their interplay is especially well-known for tipping the scales in plants' strategies of dealing with phytopathogens. In non-angiosperm lineages, the interplay is less well understood, but current data indicate that it is intertwined to a lesser extent and the canonical JA/SA antagonism appears to be absent. Here, we used the water fern Azolla filiculoides to gain insights into the fern's JA/SA signalling and the molecular communication with its unique nitrogen fixing cyanobiont Nostoc azollae, which the fern inherits both during sexual and vegetative reproduction. By mining large-scale sequencing data, we demonstrate that Azolla has most of the genetic repertoire to produce and sense JA and SA. Using qRT-PCR on the identified biosynthesis and signalling marker genes, we show that Azolla is responsive to exogenously applied SA. Furthermore, exogenous SA application influenced the abundance and gene expression of Azolla's cyanobiont. Our data provide a framework for JA/SA signalling in ferns and suggest that SA might be involved in Azolla's communication with its vertically inherited cyanobiont.

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Field Guide to Plant Model Systems

Cited by 108 publications

References 162 publications

Floral Organogenesis: When Knowing Your ABCs Is Not Enough

Floral Organogenesis: When Knowing Your ABCs Is Not Enough

Plant evolution: landmarks on the path to terrestrial life

Jasmonic and salicylic acid response in the fern Azolla filiculoides and its cyanobiont

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