Relationship of steroidal structure to ethylene production by etiolated mung bean segments

Richard N. Arteca, Jeannette M. Bachman, John H. Yopp, N. Bhushan Mandava

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Several brassinosteroid (BR) analogues, cholesterol and aldosterone were evaluated for their effectiveness alone and in combination with indole‐3‐acetic acid (IAA) in stimulating ethylene production by etiolated mung bean (Vigna radiata L. Rwilcz cv. Berken) hypocotyl segments. Changing the conformation of the two hydroxyl groups on C‐22 and C‐23 positions from α to β did not greatly reduce the efficiency of these compounds to stimulate ethylene production alone or in combination with IAA. There was little difference in activity observed when the conformation of the methyl group in the C‐24 position was changed from α to β. However, when hydroxyls were deleted from the side chain in the C‐22 and C‐23 positions, the compound was rendered inactive alone or in combination with IAA. The compound was also inactivated by removing the 7‐oxa function on the B‐ring and by substituting an ethyl group for the methyl group in the C‐24 position. Both aldosterone and cholesterol were ineffective in promoting ethylene production. This study shows that very stringent structural features are required for a steroid to have BR‐like activity and to act synergistically with auxin in the promotion of ethylene synthesis.

Original languageEnglish (US)
Pages (from-to)13-16
Number of pages4
JournalPhysiologia Plantarum
Volume64
Issue number1
DOIs
StatePublished - May 1985

Fingerprint

mung beans
ethylene production
aldosterone
acids
Aldosterone
cholesterol
Hydroxyl Radical
Acids
brassinosteroids
Vigna radiata
Brassinosteroids
Cholesterol
Hypocotyl
hypocotyls
Indoleacetic Acids
steroids
ethylene
auxins
synthesis
Steroids

All Science Journal Classification (ASJC) codes

  • Physiology
  • Genetics
  • Plant Science
  • Cell Biology

Cite this

Arteca, Richard N. ; Bachman, Jeannette M. ; Yopp, John H. ; Mandava, N. Bhushan. / Relationship of steroidal structure to ethylene production by etiolated mung bean segments. In: Physiologia Plantarum. 1985 ; Vol. 64, No. 1. pp. 13-16.
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Relationship of steroidal structure to ethylene production by etiolated mung bean segments. / Arteca, Richard N.; Bachman, Jeannette M.; Yopp, John H.; Mandava, N. Bhushan.

In: Physiologia Plantarum, Vol. 64, No. 1, 05.1985, p. 13-16.

Research output: Contribution to journalArticle

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