Effect of light source and quality on endogenous gibberellin level and GA3 response of petunia (Petunia X hybrida Vilm.)

Masami Ubukawa; Naoya Fukuda; Naomi Oyama-Okubo; Masaji Koshioka; Lewis N. Mander; Sadanori Sase; Sigeo Nishimura

Effect of light source and quality on endogenous gibberellin level and GA₃ response of petunia (Petunia X hybrida Vilm.)

Masami Ubukawa, Naoya Fukuda^*, Naomi Oyama-Okubo, Masaji Koshioka, Lewis N. Mander, Sadanori Sase, Sigeo Nishimura

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Petunia (Petunia X hybrida Vilm.) 'Baccarat Blue' under high pressure sodium lamp (HPS) exhibits, dwarfism compared with one grown under a daylight type metal halide lamp (MH). The role of gibberellin (GA) in this growth change, caused by artificial lighting was investigated. The amounts of GA₂₀ and GA₁ were lower in petunia grown under HPS than those under MH, but, the levels of GA₁₉ were similar in both treatments. Plant height of petunia was decreased by treatment with uniconazol, but the difference in plant height between treatments was small. GA₃ application promoted stem elongation of uniconazol-treated petunia; the magnitude of stem elongation was independent of light source. These results indicate that dwarfism in petunia under HPS is caused by lower GA₂₀ and GA₁ contents, but not by GA sensitivity. The GA biosynthesis step of GA₁₉ to GA ₂₀ may be affected by the light quality of these lamps.

Original language	English
Pages (from-to)	441-446
Number of pages	6
Journal	Journal of the Japanese Society for Horticultural Science
Volume	73
Issue number	5
Publication status	Published - Sept 2004

Cite this

@article{bdbc286867d141f0b56bd3a97e8030ad,

title = "Effect of light source and quality on endogenous gibberellin level and GA3 response of petunia (Petunia X hybrida Vilm.)",

abstract = "Petunia (Petunia X hybrida Vilm.) 'Baccarat Blue' under high pressure sodium lamp (HPS) exhibits, dwarfism compared with one grown under a daylight type metal halide lamp (MH). The role of gibberellin (GA) in this growth change, caused by artificial lighting was investigated. The amounts of GA20 and GA1 were lower in petunia grown under HPS than those under MH, but, the levels of GA19 were similar in both treatments. Plant height of petunia was decreased by treatment with uniconazol, but the difference in plant height between treatments was small. GA3 application promoted stem elongation of uniconazol-treated petunia; the magnitude of stem elongation was independent of light source. These results indicate that dwarfism in petunia under HPS is caused by lower GA20 and GA1 contents, but not by GA sensitivity. The GA biosynthesis step of GA19 to GA 20 may be affected by the light quality of these lamps.",

keywords = "Gibberellin, Light quality, Petunia x hybrida Vilm, Photomorphogenesis, R/FR ratio",

author = "Masami Ubukawa and Naoya Fukuda and Naomi Oyama-Okubo and Masaji Koshioka and Mander, {Lewis N.} and Sadanori Sase and Sigeo Nishimura",

year = "2004",

month = sep,

language = "English",

volume = "73",

pages = "441--446",

journal = "Journal of the Japanese Society for Horticultural Science",

issn = "1882-3351",

publisher = "Japanese Society for Horticultural Science",

number = "5",

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TY - JOUR

T1 - Effect of light source and quality on endogenous gibberellin level and GA3 response of petunia (Petunia X hybrida Vilm.)

AU - Ubukawa, Masami

AU - Fukuda, Naoya

AU - Oyama-Okubo, Naomi

AU - Koshioka, Masaji

AU - Mander, Lewis N.

AU - Sase, Sadanori

AU - Nishimura, Sigeo

PY - 2004/9

Y1 - 2004/9

N2 - Petunia (Petunia X hybrida Vilm.) 'Baccarat Blue' under high pressure sodium lamp (HPS) exhibits, dwarfism compared with one grown under a daylight type metal halide lamp (MH). The role of gibberellin (GA) in this growth change, caused by artificial lighting was investigated. The amounts of GA20 and GA1 were lower in petunia grown under HPS than those under MH, but, the levels of GA19 were similar in both treatments. Plant height of petunia was decreased by treatment with uniconazol, but the difference in plant height between treatments was small. GA3 application promoted stem elongation of uniconazol-treated petunia; the magnitude of stem elongation was independent of light source. These results indicate that dwarfism in petunia under HPS is caused by lower GA20 and GA1 contents, but not by GA sensitivity. The GA biosynthesis step of GA19 to GA 20 may be affected by the light quality of these lamps.

AB - Petunia (Petunia X hybrida Vilm.) 'Baccarat Blue' under high pressure sodium lamp (HPS) exhibits, dwarfism compared with one grown under a daylight type metal halide lamp (MH). The role of gibberellin (GA) in this growth change, caused by artificial lighting was investigated. The amounts of GA20 and GA1 were lower in petunia grown under HPS than those under MH, but, the levels of GA19 were similar in both treatments. Plant height of petunia was decreased by treatment with uniconazol, but the difference in plant height between treatments was small. GA3 application promoted stem elongation of uniconazol-treated petunia; the magnitude of stem elongation was independent of light source. These results indicate that dwarfism in petunia under HPS is caused by lower GA20 and GA1 contents, but not by GA sensitivity. The GA biosynthesis step of GA19 to GA 20 may be affected by the light quality of these lamps.

KW - Gibberellin

KW - Light quality

KW - Petunia x hybrida Vilm

KW - Photomorphogenesis

KW - R/FR ratio

UR - http://www.scopus.com/inward/record.url?scp=5144234959&partnerID=8YFLogxK

M3 - Article

SN - 1882-3351

VL - 73

SP - 441

EP - 446

JO - Journal of the Japanese Society for Horticultural Science

JF - Journal of the Japanese Society for Horticultural Science

IS - 5

ER -

Effect of light source and quality on endogenous gibberellin level and GA₃ response of petunia (Petunia X hybrida Vilm.)

Abstract

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