Studies on Leaf Unrolling in Barley

Carr, D. J.; Clements, J. Barklie; Menhenett, Roger

doi:10.1007/978-3-642-65406-0_83

Cited by 7 publications

(15 citation statements)

References 12 publications

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“…The red source has been described (Carr et al 1972). At the level of the leaves the energy was 6·5 fJ.W cm-2 • After the light treatment dishes of leaves were placed in darkness.…”

Section: (A) Growing and Harvesting Plants And Red Light Treatmentmentioning

confidence: 99%

“…These operations were all carried out with the aid of a dim green "safelight" described elsewhere (Carr et al 1972). The total energy about 10 cm above bench level was 1·7 fJ.W cm-2 •…”

Section: (A) Growing and Harvesting Plants And Red Light Treatmentmentioning

confidence: 99%

“…This has been detailed elsewhere (Carr et al 1972;Menhenett 1972). Briefly, l-cm sections of 7-day-old etiolated barley seedlings, cv.…”

Section: (Iii) Barley Leaf Unrolling Bioassaymentioning

confidence: 99%

“…Pallas (Carr et al 1972;Menhenett 1972), it was apparent that extracts of etiolated leaves inhibited growth in selected test systems (i.e. wheat seed germination and barley leaf unrolling itself).…”

Section: Introductionmentioning

confidence: 99%

“…An investigation was undertaken to test for the presence of an inhibitor of physiological importance in etiolated barley leaves and to see whether its activity decreased during the lag period of leaf unrolling. The early stages of this study have been briefly reported (Carr et al 1972).…”

Section: Introductionmentioning

confidence: 99%

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Growth Inhibitors From Etiolated Leaves of Barley (Hordeum Vulgare L.)

Menhenett¹,

Carr²

1973

Aust. Jnl. Of Bio. Sci.

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The unrolling of etiolated barley leaves, H. vulgare cv. Pallas, is phytochromemediated. After brief illumination with red light unrolling begins after 8 hr. The possibility that illumination results in the fall in content of an endogenous inhibitor led to the work reported.Inhibitory activity in an "acidic fraction" from etiolated barley leaves, as measured by leaf unrolling and wheat seed germination bioassays, declined in the 6-hr period in the dark following exposure to red light for 10 min.No abscisic acid (ABA) could be detected, either by paper chromatography and wheat coleoptile bioassay or by gas chromatography, in the inhibitory acidic fractions. The inhibitor is therefore not ABA. The inhibitory region on paper chromatograms did not exhibit a strong phenol-like reaction.Linoleic and linolenic acids, identified by gas chromatography and mass spectroscopy, were present in a 1 : 1 ratio in acidic fractions and linoleic acid inhibited unrolling. These fatty acids are chromatographically separable from the leaf-unrolling inhibitor(s). As they also increased nearly threefold in the leaves in the 6 hr following exposure to red light, they are not of interest to the present investigation. They possibly originate from etioplasts.

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“…The red source has been described (Carr et al 1972). At the level of the leaves the energy was 6·5 fJ.W cm-2 • After the light treatment dishes of leaves were placed in darkness.…”

Section: (A) Growing and Harvesting Plants And Red Light Treatmentmentioning

confidence: 99%

“…These operations were all carried out with the aid of a dim green "safelight" described elsewhere (Carr et al 1972). The total energy about 10 cm above bench level was 1·7 fJ.W cm-2 •…”

Section: (A) Growing and Harvesting Plants And Red Light Treatmentmentioning

confidence: 99%

“…This has been detailed elsewhere (Carr et al 1972;Menhenett 1972). Briefly, l-cm sections of 7-day-old etiolated barley seedlings, cv.…”

Section: (Iii) Barley Leaf Unrolling Bioassaymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Growth Inhibitors From Etiolated Leaves of Barley (Hordeum Vulgare L.)

Menhenett¹,

Carr²

1973

Aust. Jnl. Of Bio. Sci.

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Stress and Stress Coping in Cultivated Plants

1994

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Photocontrol of gibberellin levels as related to the unrolling of etiolated wheat leaves

Cooke

Saunders

1975

Planta

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The rapid increase in acidic gibberellin-like (GA-like) activity occurring in etiolated wheat (Triticum aestivum L.); leaf tissue in response to red light is phytochrome controlled. The production of some of the GA-like activity appears to possess a similar escapetime from far-red reversibility to leaf unrolling and is sensitive to Amo 1618. Application of these GA-like substances to leaf sections maintained in the dark causes unrolling. Increased GA-like activity can also be detected in non-irradiated portions of partly irradiated leaves.

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Studies on Leaf Unrolling in Barley

Cited by 7 publications

References 12 publications

Growth Inhibitors From Etiolated Leaves of Barley (Hordeum Vulgare L.)

Growth Inhibitors From Etiolated Leaves of Barley (Hordeum Vulgare L.)

Stress and Stress Coping in Cultivated Plants

Photocontrol of gibberellin levels as related to the unrolling of etiolated wheat leaves

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