Betalains and P‐type Sieve‐tube Plastids in Petiveria and Agdestis (Phytolaccaceae)

Behnke, H.–Dietmar; Chang, Christina; Eifert, Imre J.; Mabry, Tom J.

doi:10.2307/1218776

Cited by 19 publications

(2 citation statements)

References 3 publications

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“…Chemical and ultrastructural data have shown that Agdestis is properly placed in the Caryophyllales (Behnke et al, 1974). In the neighbor-joining tree (not shown here), Agdestis showed close relationships with Sarcobatus (Sarcobataceae).…”

Section: Discussionmentioning

confidence: 67%

Molecular phylogenetic relationships among members of the family Phytolaccaceae sensu lato inferred from internal transcribed spacer sequences of nuclear ribosomal DNA

Lee¹,

Kim²,

Park³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. The phylogeny of a phylogenetically poorly known family, Phytolaccaceae sensu lato (s.l.), was constructed for resolving conflicts concerning taxonomic delimitations. Cladistic analyses were made based on 44 sequences of the internal transcribed spacer of nuclear ribosomal DNA from 11 families (Aizoaceae, Basellaceae, Didiereaceae, Molluginaceae, Nyctaginaceae, Phytolaccaceae s.l., Polygonaceae, Portulacaceae, Sarcobataceae, Tamaricaceae, and Nepenthaceae) of the order Caryophyllales. The maximum parsimony tree from the analysis resolved a monophyletic group of the order Caryophyllales; however, the members, Agdestis, Anisomeria, Gallesia, Gisekia, Hilleria, Ledenbergia, Microtea, Monococcus, Petiveria, Phytolacca, Rivinia, Schindleria, Seguieria, Stegnosperma, and Trichostigma, which belong to the family Phytolaccaceae s.l., did not cluster under a single clade, demonstrating that Phytolaccaceae is polyphyletic.

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Section: Discussionmentioning

confidence: 67%

Molecular phylogenetic relationships among members of the family Phytolaccaceae sensu lato inferred from internal transcribed spacer sequences of nuclear ribosomal DNA

Lee¹,

Kim²,

Park³

et al. 2013

Genet. Mol. Res.

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“…Some families in the Caryophyllales have a unique kind of sieve-element plastid in which there are ring-shaped bundles of filaments that contain protein; these plastids are called P-type plastids (Behnke, 1972). There is another basic kind of sieve-element plastid in which starch is accumulated, and it is called an S-type plastid (Behnke, 1972(Behnke, , 1976(Behnke, , 1991Behnke et al, 1974). The non-core families in the Caryophyllales have S-type sieve-element plastids, and the core families have P-type, except the Asteropediaceae, Physenaceae and Simmondsiaceae, which have S-type (Table 1).…”

Section: Caryophyllalesmentioning

confidence: 99%

Martin's peripheral embryo – unique but not a phylogenetic ‘orphan’ at the base of his family tree: a tribute to the insight of a pioneer seed biologist

Baskin

2019

Seed Sci. Res.

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As a tribute to A.C. Martin's classic work on embryos in seeds, we have attempted to gain a better understanding of the peripheral embryo, which puzzled Martin. The peripheral embryo is strongly curved and in contact with the inner surface of the seed coat, and Martin placed it at the base of his family tree of seed phylogeny and called it a ‘phylogenetic orphan’. We evaluated ovule/seed development, kind of embryo and occurrence of perisperm in families with and without a peripheral embryo. All families with a peripheral embryo occur in the Caryophyllales. Seeds with a peripheral embryo have a low cotyledon width:radicle width ratio that coincides with Martin's (full-sized) linear embryo. The peripheral embryo develops in campylotropous and/or amphitropous ovules and is pushed to the side of the seed as the perisperm develops. Linear-full embryos and perisperm are widely distributed across extant angiosperms but are rarely found together, except in core Caryophyllales. The non-core Caryophyllales with endosperm and various kinds of embryos, including the linear-full, diverged before the core Caryophyllales. Thus, the ancestral linear-full embryo appears to have been retained when the core lineage developed campylotropous and/or amphitropous ovules and perisperm. Seeds with a peripheral embryo merit a position on Martin's family tree; however, the position should be a side branch (‘orphan’) slightly above (more advanced than) his linear embryo and not at the base. We conclude that Martin had great insight into the relationships between the kinds of embryos and rightly questioned the position of the peripheral embryo.

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Class Magnoliopsida (Dicotyledons)

2009

Flowering Plants

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Betalains and P‐type Sieve‐tube Plastids in Petiveria and Agdestis (Phytolaccaceae)

Abstract: SummaryThe discovery of betalains and P‐type sieve‐tube plastids in Petiveria and Agdestis (Phytolaccaceae) supports the assignment of these genera to the Centrospermae.

Cited by 19 publications

References 3 publications

Molecular phylogenetic relationships among members of the family Phytolaccaceae sensu lato inferred from internal transcribed spacer sequences of nuclear ribosomal DNA

Molecular phylogenetic relationships among members of the family Phytolaccaceae sensu lato inferred from internal transcribed spacer sequences of nuclear ribosomal DNA

Martin's peripheral embryo – unique but not a phylogenetic ‘orphan’ at the base of his family tree: a tribute to the insight of a pioneer seed biologist

Class Magnoliopsida (Dicotyledons)

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