<i>Zea</i> Shoot Development in Response to Red Light Interruption of the Dark-Growth Period. I. Inhibition of First Internode Elongation

Duke, Stephen O.; Wickliff, James L.

doi:10.1104/pp.44.7.1027

Cited by 14 publications

(9 citation statements)

References 11 publications

(9 reference statements)

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“…Conversely, these families of photoreceptors absorb little light in the G and Y regions, which may be relevant to the observation that these wavelengths have less pronounced effects on extension growth. Light signals through cryptochromes and phytochromes suppress extension growth in numerous darkgrown plants 1,4,6,15,16,18,31 . Our results, however, showed that night lighting with UV-A, B, R, and FR light promoted extension growth (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Of the various photoreceptors, a family known as the phytochromes absorb a spectrum of light ranging from red (R) to far-red (FR) light, and 2 families of photoreceptors known as cryptochromes and phototropins absorb a spectrum from near-ultraviolet to blue (B) light. Light signaling through cryptochromes and phytochromes suppresses the extension growth of hypocotyls, epicotyls and stems in darkgrown plants 1,6,4,15,16,18,31 . Tulip plants grown under natural light, including B and R light, also undergo less stem extension than dark-grown plants 19 .…”

Section: Introductionmentioning

confidence: 99%

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Spectral Sensitivity of the Extension Growth of Tulips Grown with Night Lighting under a Natural Photoperiod

Sumitomo

Tsuji

Yamagata

et al. 2012

JARQ

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The effect of light quality on the extension growth of tulips was investigated for 4 tulip (Tulipa gesneriana) cultivars "Leen van der mark," "Murasaki suisho," "Come back," and "Kikomachi." The exposure of tulips to ultraviolet-A (UV-A), blue (B), red (R) or far-red (FR) fluorescent tubes throughout the entire night (a process called "night lighting") was found to promote lengthening of the stem and first internode of plants grown under natural photoperiod conditions in a greenhouse. The effectiveness of FR night lighting was consistently observed across 4 cultivars, although the effectiveness of illumination within the UV-A, B and R wavelength ranges was found to vary with respect to stem length, the first internode and among different cultivars. Elevated photon flux densities of FR light were found to quantitatively increase the extension growth of "Leen van der mark," but the effect of FR night lighting reached saturation point at 0.59 μmol m -2 s -1. A 4-h end-of-day lighting period and night-break FR lighting period were also found to promote extension growth, but these effects were less pronounced than that induced by FR night lighting. A 4-h end-of-night FR lighting period had no effect on extension growth. Apart from these findings, the effects of the light quality on extension growth are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spectral Sensitivity of the Extension Growth of Tulips Grown with Night Lighting under a Natural Photoperiod

Sumitomo

Tsuji

Yamagata

et al. 2012

JARQ

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“…Tobacco seed germinates in response to deepred just as well as to red, if exposed a long time after sowing; plantain seed likewise if exposed a long time after harvesting. According to Duke and Wickliff (1969), growth of the mesocotyl of Zea is inhibited by both red and deep-red, even though deep-red prevents inhibition by previous red.…”

Section: Discussionmentioning

confidence: 99%

Phytochrome and Seed Germination

Holdsworth

1972

New Phytologist

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SUMMARYBoth tobacco 'Virginia Gold' and Plantago hirtella seed germinate on exposure to red light. During the first day or so after sowing, the response can be stopped by a following exposure to deep-red, indicating phj'tochrome action. However, the effects of successive exposures to red are additive through intervening exposures to deep-red. Moreover, after several days in the dark, both red and deep-red induce germination.

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“…Both responses occur primarily as changes in growth pattern of the tissues in the meristematic and cell enlarging regions of the mesocotyl near the coleoptilar node (4, 12, 13, 21), although some inhibition of elongation can occur in more mature tissues (4, 12). Inhibition of mesocotyl elongation can be induced by short-time exposures (<5 min) to red light of low total fluence, and the induction exhibits some red/far red reversibility (13 2To whom all correspondence should be addressed.to that produced by C2H4. We report here evidence that the mesocotyl swellings induced by light and by exogenously applied C2H4 are similar, morphologically and anatomically, and that the light and C2H4 effects occur during similar stages of seedling development.…”

mentioning

confidence: 99%

“…This swelling response was an allor-none response, and the fraction of the seedling population that showed the response depended on seedling age at irradiation. Mesocotyls of dark-grown maize seedlings exhibit two photomorphogenic responses following a light interruption of the dark growth: inhibition of mesocotyl elongation (4,13,19,26,27) and a transverse enlargement of the mesocotyl apical diameter (11,12). Both responses occur primarily as changes in growth pattern of the tissues in the meristematic and cell enlarging regions of the mesocotyl near the coleoptilar node (4, 12, 13, 21), although some inhibition of elongation can occur in more mature tissues (4, 12).…”

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confidence: 99%

Light or Ethylene Treatments Induce Transverse Cell Enlargement in Etiolated Maize Mesocotyls

Camp¹,

Wickliff²

1981

Plant Physiol.

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Dark-grown maize seedlings (hybrid WF-9 x 38-11) exposed for 1 or more hours to white light and then returned to darkness developed mesocotyls with enlarged apical diameters. This swelling response was an all-or-none response, and the fraction of the seedling population that showed the response depended on seedling age at irradiation. Irradiation of the coleoptile alone was nearly as effective in causing this response as was irradiation of the nodal region of the epicotyl, but irradiation of the mesocotyl base was ineffective. Removal of the coleoptile prior to irradiation did not prevent the formation of the light-induced swelling. Exogenously applied C(2)H(4) (10 microliters per liter) for 24 hours in dark also induced swelling of the mesocotyl. The swelling induced in the intact seedlings was localized in the apical mesocotyl tissues with either light or C(2)H(4) treatment, and maximal response to both treatments occurred with 3- to 4-day-old seedlings. Swelling of the mesocotyl was the result of transverse cell enlargement, not increase of cell numbers. The evidence suggests that light and C(2)H(4) induce mesocotyl swelling in intact maize shoots by a common mechanism.

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Zea Shoot Development in Response to Red Light Interruption of the Dark-Growth Period. I. Inhibition of First Internode Elongation

Abstract: Abstract. Brief, low energy (approximately 400 Kerg cm-2) red light interruption of the early dark-growth period of Zea mays L. cv

Cited by 14 publications

References 11 publications

Spectral Sensitivity of the Extension Growth of Tulips Grown with Night Lighting under a Natural Photoperiod

Spectral Sensitivity of the Extension Growth of Tulips Grown with Night Lighting under a Natural Photoperiod

Phytochrome and Seed Germination

Light or Ethylene Treatments Induce Transverse Cell Enlargement in Etiolated Maize Mesocotyls

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