Developmental studies on the androecium of the alismatales

Leins, Peter; Stadler, Peter F.

doi:10.1007/bf01373364

Cited by 29 publications

(27 citation statements)

References 5 publications

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“…We agree with the results of Leins and Stadler (1973) with one exception, namely, the origin of the circular rim("Ringwa1l"). According to Leins and Stadler the "Ringwall" arises uniformly on the periphery of the floral apex; they even say that it is widest opposite the sepal primordia.…”

Section: Discussionsupporting

confidence: 91%

“…The CA primordia, especially their upper portions, extend laterally; thus, a broad circular rim is formed ("Ringwall" according to Leins and Stadler 1973) that surrounds completely the periphery of the floral apex. Figure 4 shows the early stages of this development.…”

Section: Discussionmentioning

confidence: 99%

“…Kaul (1968) also described floral development. Recently, Leins and Stadler (1973) reinvestigated early floral development and found a pattern of androecial inception that differs considerably from that of other Alismatales. Since Leins and Stadler, like Kaul, used mainly serial sectioning to reconstruct the pattern, it appeared desirable, especially in view of certain differences of opinion, to investigate 'This investigation was supported by grant A 2594 from the National Research C o~~n c i l of Canada.…”

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Floral development of Hydrocleis nymphoides

Sattler¹,

Singh²

1973

Can. J. Bot.

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SATTLER, R., and V. SINGH. 1973. Floral developnient of fi):d,ncl~.i.s tlyt~~p/roi~Ie~. Call. J . Bot. 51: . After the inception of three sepal priniordia, three petal-stamen (CA) primordia (bulges) are formed in alternisepalous positions. On each of these bulges a petal is initiated, followed by a pair or stamens relatively high up on the bulge, where it is continuous with the floral apex. Growth extends between the three bulges, thus forming an inconspicuous circular rim around the floral apex. As this rim increases in size, further stamens and eventually staminodia are formed centrifugally on the rim. Five or six carpel priniordia are initiated centrally to the first-formed pairs of stamen primordia long before all stamens and staminodia have appeared. In spite of considerable deviations from the trimerous monocotyledonous floral construction, tlie priniary organogenetic pattern is trimerous (wit11 the exception of at least the pentamerous flowers) and it is comparable to the primary patterns round in illist~m, Brrtom~rs, and other Alisniatales. Thus, the study of the earliest developmental stages reveals a common plan that is elusive in later developmental stages and mature flowers. SATTLER, R., et V. SINGH. 1973. Floral development of Hyc1t.oclri.s ttyt~rphoicles. Can. J. Bot. 51: 245-2458. Cbez Hyrlrocleis r~yrrrplroides, apres I'apparition de trois primordiums sepalaires, trois primordiums (bourrelets) pktalo-staminaires (CA) se rornient en position alternisCpalaire. Un pCtale est initie sur chacun de ces bourrelets, suivi par une paire d'Ctaniines a une position relativement ClevCe sur le bourrelet, la oh il se continue dans l'apex floral. La croissance se continue entre les trois bourrelets, de sorte qu'il se forme un anneau circulaire peu apparent autour de I'apex floral. A mesure que cet anneau grossit, d'autres Ctamines et eventuellement des staminodes se foment sur I'anneau en direction centrifuge. Longtemps avant que les Ctamines et les staniinodes soient tous apparus, cinq ou six primordiums carpellaires sont initiCs en position centrale par rapport aux deux premiers primordiums staminaires. Malgre de fortes deviations a partir de la construction florale trimere des Monocotyles, le patron organogCnCtique primaire est trimere (a l'exception des fleurs pentamkres au moins) et est comparable aux patrons trimeres qu'on rencontre chez Alistnc~, B~rtot?7~rs et d'autres Alismatales. Ainsi, l'Ctude des premiers stades de dkveloppement revkle un plan commun qui disparait aux itapes ultCrieures du dCveloppement et dans les fleurs matures.[Traduit par le journal]

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

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confidence: 96%

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Floral development of Hydrocleis nymphoides

Sattler¹,

Singh²

1973

Can. J. Bot.

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“…228,229,232) The flowers are bisexual or unisexual (Haynes, Les & Holm-Nielsen, 1998~). Carpels 3-20 (up to 660 in Sagittaria; Salisbury, 1926;Kaul, 1967a), small, whorled (in Alisma and other genera in more than one whorl; Sattler & Singh, 1978;van Heel, 1983) or irregular if numerous (Leins & Stadler, 1973;Charlton, 1991;Wang et al, 1998), free (in Damasonium basally united via the undifferentiated floral centre), largely plicate but in early development pronouncedly ascidiate (Alisma, Caldesia, Echinodorus;Sprotte, 1940;Eckardt, 1957;Singh & Sattler, 1972;Sattler, 1973;van Heel, 1983;Wang & Chen, 1997); dorsally pronouncedly expanded so that the outlet of the ovarial cavity on the ventral side is restricted to a very short zone near the base of each carpel (Gregoire, 1938;Eckardt, 1957); ovary superior. The carpel apex is not extended into two lateral tips.…”

Section: Araceae (Incl Lemnaceae) (Alismatales)mentioning

confidence: 99%

Gynoecium diversity and systematics in basal monocots

Igersheim

Buzgo

Endress

2001

Botanical Journal of the Linnean Society

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Gynoecium and ovule structure was comparatively studied in representatives of the basal monocots, including Acorales (Acoraceae), Alismatales (Araceae, Alismataceae, Aponogetonaceae, Butomaceae, Hydrocharitaceae, Juncaginaceae, Iimnocharitaceae, Potamogetonaceae, Scheuchzeriaceae, Tofieldiaceae), Dioscoreales (Dioscoreaceae, Taccaceae), and Triuridaceae as a family of uncertain position in monocots. In all taxa studied the carpels or gynoecia are closed at anthesis. This closure is attained in different ways: (1) by secretion without postgenital fusion (Araceae, Hydrocharitaceae); (2) by partly postgenitally fused periphery but with a completely unfused canal (Alismataceae, Aponogetonaceae, Butomaceae, Limnocharitaceae, Scheuchzeriaceae, Dioscoreaceae, Taccaceae); (3) by completely postgenitally fused periphery but with an unfused canal in the centre (Acoraceae, Tofieldiaceae); (4) by complete postgenital fusion and without an (unfused) canal (Juncaginaceae, Potamogetonaceae). In many Alismatales (but without Araceae) carpels have two lateral lobes. The stigmatic surface is restricted to the uppermost part of the ventral slit (if the carpel is plicate); it is never distinctly double-crested (Butomaceae?). Stigmas are commonly unicellular-papillate and secretory in most taxa. The locules are filled with a (often) mucilaginous secretion in a number of taxa. Superficial (probably intrusive) ethereal oil cells were found in the carpel wall of Acorus granaineus (as in Piperales!). Idioblasts in carpels are otherwise rare. A number of basal monocots has orthotropous ovules, which is perhaps the plesiomorphic condition in the group. The presence of almost tenuinucellar (pseudocrassinucellar) ovules is relatively common (Acoraceae, many Araceae, some Alismatales s.s.), whereas completely tenuinucellar ovules are rare and do not characterize larger groups. However, crassinucellar ovules occur in the largest number of families among the study group (basal Araceae, many Alismatales s.s.) The outer integument is always annular in orthotropous ovules. The inner integument is often lobed and it mostly forms the micropyle, whereas the outer integument is always unlobed. Gynoecium structure supports the isolated position of Acoraceae as sister to all other monocots. However, in an overall view, if compared with all other families, Acoraceae clearly shows the greatest similarities with Araceae.

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“…Here, we present the fi rst detailed description of fl ower anatomy and development in Posidonia , including specimens specifi cally collected by underwater diving several times during a Kaul, 1967a , b ;Sattler, 1972 , 1973 ;Charlton and Ahmed, 1973 ;Sattler and Singh, 1973 ;Leins and Stadler, 1973 ;van Heel, 1988 ;Ronse De Craene and Smets, 1995 ;Charlton, 2004Aponogetonaceae Singh and Sattler, 1977Araceae Lehmann and Sattler, 1992Scribailo and Tomlinson, 1992 ;Barabé, et al, 2000Barabé, et al, , 2002Barabé, et al, , 2011Buzgo, 2001Butomaceae Singh and Sattler, 1974Cymodoceaceae Tomlinson and Posluszny, 1978McConchie et al, 1982Hydrocharitaceae Kaul, 1969Posluszny, 1985 Juncaginaceae Lieu, 1979 ;Charlton, 1981 ;Posluszny et al, 1986 ;Buzgo et al, 2006 ;Remizowa et al, in press Posidoniaceae This study Potamogetonaceae Sattler, 1965 ;Posluszny and Sattler, 1973, 1974a, 1976Posluszny and Tomlinson, 1977 ;Posluszny, 1981 ;Sun et al, 2000 Ruppiaceae Posluszny andSattler, 1974b ;Kaul, 1993 ;Lock et al, 2011 ;Lock, 2012Scheuchzeriaceae Posluszny, 1983 Tofi eldiaceae Remizova and Sokoloff, 2003 ;Remizowa et al, 2005, in press Zo...…”

Section: Methodsmentioning

confidence: 99%

Flowers and inflorescences of the seagrass Posidonia (Posidoniaceae, Alismatales)

Remizowa

Sokoloff

Calvo³

et al. 2012

American J of Botany

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Our data support a racemose interpretation for the partial inflorescence of Posidonia and the presence of flower-subtending bracts. In common with some other Alismatales, Posidonia has simultaneous development of the flower and its subtending bract and loss of the bract vascular supply accompanied by innervation of the flower by a single vascular strand. The unusual carpel orientation could be an evolutionary reduction of a formerly tricarpellate gynoecium. The ovule of Posidonia is campylotropous and unusual within Alismatales in possessing an integumentary outgrowth.

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Developmental studies on the androecium of the alismatales

Cited by 29 publications

References 5 publications

Floral development of Hydrocleis nymphoides

Floral development of Hydrocleis nymphoides

Gynoecium diversity and systematics in basal monocots

Flowers and inflorescences of the seagrass Posidonia (Posidoniaceae, Alismatales)

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