Shoot Meristem Formation in Vegetative Development.

Kerstetter, Randall A.; Hake, Sarah

doi:10.1105/tpc.9.7.1001

Cited by 149 publications

(84 citation statements)

References 49 publications

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“…Besides the primary shoot meristem, plants are capable of regenerating shoot meristems during their postembryonic development, such as axillary and adventitious shoot meristems (Kerstetter and Hake, 1997;Domagalska and Leyser, 2011;Wang et al, 2014). Six decades ago, Skoog and Miller found that under the induction of exogenous cytokinin and auxin, adventitious shoots could be induced in vitro from a mass of proliferating cells named callus (Skoog and Miller, 1957;Sugimoto et al, 2010;Iwase et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Type-B ARABIDOPSIS RESPONSE REGULATORs Specify the Shoot Stem Cell Niche by Dual Regulation of WUSCHEL

et al. 2017

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ORCID IDs: 0000-0003-3103-8629 (W.J.M.); 0000-0002-3129-5206 (X.S.Z.)Plants are known for their capacity to regenerate the whole body through de novo formation of apical meristems from a mass of proliferating cells named callus. Exogenous cytokinin and auxin determine cell fate for the establishment of the stem cell niche, which is the vital step of shoot regeneration, but the underlying mechanisms remain unclear. Here, we show that type-B ARABIDOPSIS RESPONSE REGULATORs (ARRs), critical components of cytokinin signaling, activate the transcription of WUSCHEL (WUS), which encodes a key regulator for maintaining stem cells. In parallel, type-B ARRs inhibit auxin accumulation by repressing the expression of YUCCAs, which encode a key enzyme for auxin biosynthesis, indirectly promoting WUS induction. Both pathways are essential for de novo regeneration of the shoot stem cell niche. In addition, the dual regulation of type-B ARRs on WUS transcription is required for the maintenance of the shoot apical meristem in planta. Thus, our results reveal a long-standing missing link between cytokinin signaling and WUS regulator, and the findings provide critical information for understanding cell fate specification.

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Section: Introductionmentioning

confidence: 99%

Type-B ARABIDOPSIS RESPONSE REGULATORs Specify the Shoot Stem Cell Niche by Dual Regulation of WUSCHEL

et al. 2017

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“…During early embryogenesis in Arabidopsis, for example, stereotyped, formative cell divisions block out domains in which symmetries, axes, and apices arise (Jürgens, 1995;Laux and Jürgens, 1997, in this issue). From late embryogeny forward, the products of embryonic and apical mitoses contribute to ongoing organogenesis by leaving behind anlagen and primordia along an axis composed of nascent dermal, ground, and vascular tissues in roughly concentric domains (see Clark, 1997;Kerstetter and Hake, 1997, in this …”

Section: Introductionmentioning

confidence: 99%

Why Do Plant Cells Divide?

Jacobs

1997

Plant Cell

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“…Genes are known to be involved both during the formation of the visible shoot meristem and in its maintenance (Barton and Poethig, 1993;Clark et al, 1996;Laux Heredity et al, 1996;Kerstetter and Hake, 1997) and to be differentially active over its expanse (Fleming et al, 1993;Pien et al, 2001).The transformation of a cellular cytoplasmic element or region into a multicellular region with the capacity for initiation of organs, as well as considerable control over their shape and/or rate of development (Steeves and Sussex, 1989;Lyndon, 1990;Sachs, 1991) probably involves many genes. An interaction between maternal and paternal cytoplasmic components which initially 'fixes' or determines the polarity of the zygote (Lyndon, 1990), perhaps in a non-specific way in most known cases, but in a highly specific way in this case, seems a suitable postulate here.…”

Section: Discussionmentioning

confidence: 99%

Evidence for cytoplasmic inheritance of a developmental organizer affecting growth habit and leaf shape in Antirrhinum majus

Bergbusch¹

2002

Heredity

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A cross between two distinct, true-breeding plants of Antirrhinum majus L. showed an unexpected pattern of inheritance of growth habit in the F2, which was extended to both growth habit and leaf shape in the F3 generation of all the plants traced further. All the F3 families, offspring of individual F2 plants, were very uniform for both growth habit and leaf shape traits but differed distinctly from each other in these respects. The backcrosses of selected F3 and F4 families to the original parents in the cross did not segregate for the distinctive family phenotypes. This led to the postulate

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Shoot Meristem Formation in Vegetative Development.

Cited by 149 publications

References 49 publications

Type-B ARABIDOPSIS RESPONSE REGULATORs Specify the Shoot Stem Cell Niche by Dual Regulation of WUSCHEL

Type-B ARABIDOPSIS RESPONSE REGULATORs Specify the Shoot Stem Cell Niche by Dual Regulation of WUSCHEL

Why Do Plant Cells Divide?

Evidence for cytoplasmic inheritance of a developmental organizer affecting growth habit and leaf shape in Antirrhinum majus

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