<i>TIP1</i> is required for both tip growth and non‐tip growth in <i>Arabidopsis</i>

Ryan, Eoin G.; Grierson, Claire; Cavell, Alison C.; Steer, Martin; Dolan, Liam

doi:10.1046/j.1469-8137.1998.00896.x

Cited by 79 publications

(86 citation statements)

References 11 publications

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“…Other visual screens have identified mutations that allow tubes to grow without emerging from the grain or disrupt the accumulation and deposition of callose before pollen tube emergence (Johnson and McCormick, 2001). In addition, screens for pollen gametophytic mutations have yielded mutants altered in germination, polarity, and tube emergence (Ryan et al, 1998;Grini et al, 1999;Johnson and McCormick, 2001;Procissi et al, 2001;Johnson and Preuss, 2002;Lalanne and Twell, 2002). Similar approaches have not yet yielded stigma-specific mutations, despite numerous screens to isolate sporophytic sterile mutants.…”

Section: Pollen Polarization and Germination: Preparing For Pollen Tumentioning

confidence: 99%

Pollen and Stigma Structure and Function: The Role of Diversity in Pollination

Edlund

Swanson

Preuss

2004

THE PLANT CELL ONLINE

493

431

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Section: Pollen Polarization and Germination: Preparing For Pollen Tumentioning

confidence: 99%

Pollen and Stigma Structure and Function: The Role of Diversity in Pollination

Edlund

Swanson

Preuss

2004

THE PLANT CELL ONLINE

493

431

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“…Since then the attraction of Arabidopsis culture has led to studies on the reasons for the diversity of epidermal cell fate in this family (see Dolan et al, 1993Dolan et al, , 1994aRyan et al, 1998).…”

Section: Trichoblastsmentioning

confidence: 99%

Pattern in root meristem development in angiosperms

2000

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Roots of angiosperms differ in the behaviour of their apical meristems, and this diversity has been studied through the patterns of differentiation in a range of families. Except for three families of the Nymphaeales, all dicotyledons derive the epidermis wholly or partially with the root cap. In closed meristems the inner cell layer of the cap complex forms the epidermis ; in open meristems, where cortex and cap are intermittently of common origin, linkages between the epidermis and the cap predominate. Roots of most monocotyledons derive the epidermis as the outer layer of the cortex. Nymphaeaceae, Cabombaceae and Barclayaceae resemble monocotyledons in this respect, and this applies even in the species with open meristems, in which a cleft forms between the cap and the rest of the apex. This feature fits with the close relationship between the Nymphaeales and monocotyledons revealed by other data. But none of the other Magnoliidae with close links to Liliidae has this type of epidermis. The Nymphaeales are also almost unique among dicotyledons in having trichoblasts in a vertical pattern. This results from transverse divisions of epidermal cells giving two conspicuously different daughters. The smaller and most densely staining one later bears a root hair. This is the way trichoblasts develop in many monocotyledons. The only other dicotyledons found with trichoblasts in vertical patterns are in the Piperaceae, though their closed meristems derive the epidermis in the normal dicotyledon pattern. All other dicotyledons that bear trichoblasts develop them in radial patterns probably related to the radial disposition of cells across the cortex. This pattern is more widespread than was previously known, though it can occur only in roots with closed meristems. In plants of both subclasses with vertical patterns of trichoblasts, it is usually the proximal daughter of the initiating mitosis which becomes the trichoblast. But it is the distal daughter in Juncaceae, Restionaceae, Cyperaceae and Poaceae. Vertical patterns differ further as to whether the atrichoblast daughters divide after initiation, thus changing the alternation of trichoblasts and atrichoblasts along a file of epidermal cells. Monocotyledons and the Nymphaeaceae can produce trichoblasts in open or closed meristems. In some embryos and root primordia the epidermis becomes discrete from cortex and cap and remains so in the meristems. This has now been found in six aquatic genera of the Liliidae, but reports of it occurring elsewhere are probably due to misinterpretation of sections. Discrete epidermises differentiate into trichoblasts and atrichoblasts in Hydrocharitaceae, but not in Araceae or Lemnaceae.

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“…Aniline blue staining was performed as described by Ryan et al (1998) and Singh et al (2002) with modifications.…”

Section: Examination Of Pollen Tube Growthmentioning

confidence: 99%

Gibberellin Regulates Pollen Viability and Pollen Tube Growth in Rice

et al. 2007

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Gibberellins (GAs) play many biological roles in higher plants. We collected and performed genetic analysis on rice (Oryza sativa) GA-related mutants, including GA-deficient and GA-insensitive mutants. Genetic analysis of the mutants revealed that rice GA-deficient mutations are not transmitted as Mendelian traits to the next generation following self-pollination of F1 heterozygous plants, although GA-insensitive mutations are transmitted normally. To understand these differences in transmission, we examined the effect of GA on microsporogenesis and pollen tube elongation in rice using new GA-deficient and GA-insensitive mutants that produce semifertile flowers. Phenotypic analysis revealed that the GA-deficient mutant reduced pollen elongation1 is defective in pollen tube elongation, resulting in a low fertilization frequency, whereas the GA-insensitive semidominant mutant Slr1-d3 is mainly defective in viable pollen production. Quantitative RT-PCR revealed that GA biosynthesis genes tested whose mutations are transmitted to the next generation at a lower frequency are preferentially expressed after meiosis during pollen development, but expression is absent or very low before the meiosis stage, whereas GA signal-related genes are actively expressed before meiosis. Based on these observations, we predict that the transmission of GA-signaling genes occurs in a sporophytic manner, since the protein products and/or mRNA transcripts of these genes may be introduced into pollen-carrying mutant alleles, whereas GA synthesis genes are transmitted in a gametophytic manner, since these genes are preferentially expressed after meiosis.

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TIP1 is required for both tip growth and non‐tip growth in Arabidopsis

Cited by 79 publications

References 11 publications

Pollen and Stigma Structure and Function: The Role of Diversity in Pollination

Pollen and Stigma Structure and Function: The Role of Diversity in Pollination

Pattern in root meristem development in angiosperms

Gibberellin Regulates Pollen Viability and Pollen Tube Growth in Rice

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