Regulation of Leaf Shape in Proserpinaca palustris

Schmidt, Barbara L.; Millington, W. F.

doi:10.2307/2483674

Cited by 31 publications

(18 citation statements)

References 21 publications

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“…Although these leaf primordia are structurally identical at inception and cannot be distinguished except by position, very shortly after this, when primordia are 70-90 pm in length, their pathways of development diverge and the ultimate form of the leaf is established at an early stage. This is similar to Carya (Foster 1935a(Foster , 1935b and Morus alba (Cross 1936(Cross , 1937 bud scales and foliage leaves but in contrast with the situation in Ranuncz~lus (Schmidt and Millington 1968) where water and land forms of leaves are identical until primordia are 500 pm in length. However, in Salvi~za, leaf form is not environmentally controlled as in some other heterophyllous aquatic plants.…”

Section: Discussionsupporting

confidence: 74%

“…Although these changes in leaf morphology have different degrees of expression which may be separated into categories, e.g., heterophylly, lateral or habitual, anisophylly heteroblastic leaf series, the unifying feature of interest in this phenomenon is that different pathways of leaf development exist within a given species. Numerous studies describing ontogeny of divergent leaf types have dealt with angiosperm species (Kaplan 1970(Kaplan , 1973(Kaplan , 1975Schmidt and Millington 1968;Bostrack and Millington 1962;Cook 1969;Jones 1956;McCallum 1902;McCully and Dale 1961;Foster 1935a, 19356;Cross 1936Cross , 1937, but fewer studies have been conducted on fern leaf ontogeny and its aspects (Steeves and Briggs 1958;Crotty 1955;Cutter 1955;Pray 1960Pray , 1962Gaudet 1964aGaudet , 19646, 1965Sossountzov 1965;Saha 1963). This presumably is due to crozier formation in ferns and the resulting orientation problems which make interpretation of sectioned material difficult.…”

Section: Introductionmentioning

confidence: 99%

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Salvinia leaves. I. Origin and early differentiation of floating and submerged leaves

Croxdale¹

1978

Can. J. Bot.

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A study of floating and submerged Salvinia leaves using light and scanning electron microscopy shows unique features in the arrangement of leaves and their growth. Leaves are produced in phyllotactic units of six; within each phyllotactic unit are two sets or groups of three leaves each. The genetic spiral of leaf initiation is not unidirectional but alternates from clockwise to counterclockwise with the production of each group of three leaves. Within each group of leaves, the sequence of primordial expansion is the reverse of their inception. Observations of floating leaf apical cells show that during development they undergo configurational changes from rectangular to hemisperical to lenticular to tetrahedral. Floating and submerged leaves diverge structurally when they are 70–90μm in length. The general course of leaf development appears to differ from previously described ferns and angiosperms in that each floating leaf blade panel is generated from the abaxial primordial surface.

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Section: Discussionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Salvinia leaves. I. Origin and early differentiation of floating and submerged leaves

Croxdale¹

1978

Can. J. Bot.

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“…From the anatomical point of view, the thin and elongated shapes of submerged leaves are commonly accompanied by elongated epidermal cells (Schmidt and Millington 1968;Deschamp and Cooke 1983;Young et al 1987;Goliber and Feldman 1990). In one case, gibberellins (GAs) are likely to be involved as an endogenous factor that induces the formation of submerged leaves with elongated epidermal cells (Deschamp and Cooke 1983).…”

Section: Introductionmentioning

confidence: 99%

Effects of ethylene and abscisic acid upon heterophylly in Ludwigia arcuata (Onagraceae)

Kuwabara

Ikegami

Koshiba

et al. 2003

Planta

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In this study, we examined the effects of ethylene and abscisic acid (ABA) upon heterophyllous leaf formation of Ludwigia arcuata Walt. Treatment with ethylene gas resulted in the formation of submerged-type leaves on terrestrial shoots of L. arcuata, while treatments with ABA induced the formation of terrestrial-type leaves on submerged shoots. Measurement of the endogenous ethylene concentration of submerged shoots showed that it was higher than that of terrestrial ones. In contrast, the endogenous ABA concentration of terrestrial shoots was higher than that of submerged ones. To clarify interactions of ethylene and ABA, simultaneous additions of these two plant hormones were examined. When L. arcuata plants were treated with these two plant hormones, the effects of ABA dominated that of ethylene, resulting in the formation of terrestrial-type leaves. This suggests that ABA may be located downstream of ethylene in signal transduction chains for forming heterophyllous changes. Further, ethylene treatment induced the reduction of endogenous levels of ABA in tissues of L. arcuata, resulting in the formation of submerged-type leaves. Thus the effects of ethylene and ABA upon heterophyllous leaf formation are discussed in relationship to the cross-talk between signaling pathways of ethylene and ABA.

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“…During the past three decades developmental studies have appeared for a number of heterophyllic aquatic species including Ranunculus flabellaris (Bostrack and Millington, 1962), Proserpinaca palustris (Schmidt and Millington, 1968), Ranunculus aquatilis (Cook, 1969), Callitriche intermedia (Jones, 1955), and Callitriche heterophylla (Deschamp and Cooke, 1985). A number of general conclusions can be drawn from these studies.…”

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confidence: 99%

Developmental Analysis of Leaf Plasticity in the Heterophyllous Aquatic Plant Hippuris Vulgaris

Goliber

Feldman

1990

American J of Botany

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Leaf development was studied in the heterophyllous aquatic plant Hippuris vulgaris in order to characterize the developmental events that lead to the formation of aerial‐ vs. submerged‐type leaves. Recent evidence that abscisic acid regulates leaf development in this species provided a basis for using abscisic acid as a developmental tool to accurately control leaf development. We found that leaf primordia were fully competent to develop into either aerial‐ or submerged‐type leaves until the 10th plastochron, when they were ca. 300 μm long. Also, leaves between about the 10th and 21st plastochron formed sectored transition leaves (i.e., the basipetal portion was composed of aerial‐type tissue and the apical portion was composed of submerged‐type tissue, or vice versa), indicating that tissue determination as one or the other leaf type occurred on a local, as opposed to whole‐leaf, level. Finally, no significant difference was observed between the apical dimensions of aerial or submerged‐type shoots. These results indicate that the final determination of Hippuris vulgaris leaves occurs a) relatively late in leaf development, and b) independently of the shoot apex, and provide a basis for using this plant in further studies concerning leaf determination and pattern formation (e.g., stomates, lateral venation) in plants.

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Regulation of Leaf Shape in Proserpinaca palustris

Cited by 31 publications

References 21 publications

Salvinia leaves. I. Origin and early differentiation of floating and submerged leaves

Salvinia leaves. I. Origin and early differentiation of floating and submerged leaves

Effects of ethylene and abscisic acid upon heterophylly in Ludwigia arcuata (Onagraceae)

Developmental Analysis of Leaf Plasticity in the Heterophyllous Aquatic Plant Hippuris Vulgaris

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