Developmental states associated with the floral transition

McDaniel, Carl N.; Singer, Susan R.; Smith, Susan

doi:10.1016/0012-1606(92)90091-t

Cited by 70 publications

(33 citation statements)

References 46 publications

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“…9b). The number of nodes produced prior to floral determination and anthesis in Nicotiana tabacum (Samsun) has been shown to be between 25 and 32 and the wild-type plants used in this study produced an average of 29 nodes (McDaniel & Hsu 1976;McDaniel et al 1996). In the SBPase antisense plants the number of nodes produced prior to floral determination varied, but was dependent on the level of SBPase activity.…”

Section: Floral Biomass and Developmentmentioning

confidence: 79%

“…Carbohydrate, in the form of sucrose, is involved in the transition to flowering and increased translocation of sugars into the shoot apex has been implicated in floral induction (Bernier et al . 1993;McDaniel, Singer & Smith 1996;Corbesier, Lejeune & Bernier 1998). Shoot morphology is also affected by the environmental conditions that the plant experiences during development.…”

Section: Introductionmentioning

confidence: 99%

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Decreased SBPase activity alters growth and development in transgenic tobacco plants

Lawson

Bryant

Lefebvre

et al. 2005

Plant Cell & Environment

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The effects of reduced SBPase activity on growth and development were examined in a set of transgenic tobacco plants produced using an antisense construct driven by the ribulose bisphosphate carboxylase, small subunit promoter. Photosynthetic carbon assimilation rates and carbohydrate levels in source leaves were decreased in the antisense plants. Growth rate and total shoot biomass were reduced in the SBPase antisense plants, even in plants where SBPase activity was reduced by only 25%. Floral biomass also decreased in response to reductions in SBPase activity and the onset of flowering was delayed by 5-10 d. This is the first demonstration of a link between reproductive biomass and reductions in Calvin cycle enzyme activity using antisense plants. Furthermore, unexpected changes in the growth and development of the antisense plants were evident. Small reductions in SBPase activity (above 50% wild type) resulted in shorter plants with only a small decrease in stem biomass and specific leaf area. In contrast, plants with larger reductions in SBPase activity had an increase in specific leaf area and attained heights similar to that of the wild-type plants but with a much reduced stem biomass, largely due to a decrease in xylem tissue. This bi-modal response of growth to reductions in SBPase activity has similarities to changes in leaf and stem anatomy and morphology that accompany light acclimation.

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Section: Floral Biomass and Developmentmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Decreased SBPase activity alters growth and development in transgenic tobacco plants

Lawson

Bryant

Lefebvre

et al. 2005

Plant Cell & Environment

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“…It is generally known that much of plant development occurs through the reiterative production of organ primordia at the shoot apical meristem (SAM) and the developmental fate of primordia initiated at the SAM is controlled by environmental and endogenous signals [14], [15]. Both structures of leafy head and curd could result from the proliferation of lateral primordia, in which if the primordium enters into the fate of leave program becoming leafy head like that in Chinese cabbage, and if it arrests at the developmental stage between the vegetative form and floral differentiation giving bumpy white curd like that in cauliflower.…”

Section: Discussionmentioning

confidence: 99%

Molecular characters and morphological genetics of CAL gene in Chinese cabbage

Shen

Liu

et al. 2000

Cell Res

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BcpCAL, the homologous gene of CAL, was isolated from Chinese cabbage. Unlike BobCAL of cauliflower, BcpCAL did not hold the terminating mutatzion in the fifth exon. After crosses of cauliflower with Chinese cabbage, the resultant hybrids failed to form curd, which implicates the genetic complement of BcpCAL to the mutated BobCAL in the function of curd formation. One of CAL gene isolated from the hybrid apparently comes from the female parent (Chinese cabbage) even though there are a few of the bases substituted and deleted. The result offers the molecular and genetic evidences for the study of biological function of CAL in morphological genetics of curd.

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“…Extensive studies in tobacco have demonstrated that floral evocation requires the apical bud to pass through two developmental stages for it to flower viz. Competent and Determined (McDaniel et al 1992). A bud is said to be competentif it is able to flower when given the appropriate developmental signal.…”

Section: Internal Cues -Floral Evocation Phase Changementioning

confidence: 99%