Shang Fa Yang was a Taiwanese-American biochemist and botanist specializing in agricultural chemistry who taught at the University of California, Davis. He proved that the amino acid methionine is the precursor of the plant hormone ethylene and discovered aminocyclopropane-1-carboxylic acid, or ACC, as the key intermediate in ethylene's biosynthesis, a pathway now known as the Yang Cycle, and this work underlies practical methods for controlling the ripening and prolonging the freshness of fruits and flowers.
Facts
Defining ContributionDiscovered that methionine is the precursor of ethylene in plant tissue and identified aminocyclopropane-1-carboxylic acid (ACC) as the key biosynthetic intermediate, work known as the Yang Cycle that underlies fruit and flower ripening research. 1 Sources
1. Shang Fa Yang (Wikipedia)
Wikimedia Foundationopening sentence, dates and nationality
Shang Fa Yang (Chinese: 檊祥發; pinyin: Yáng Xiángfā; November 10, 1932, February 12, 2007) was a Taiwanese-American biochemist and botanist specializing in agricultural chemistry.
career summary section, ethylene biosynthesis
He studied the pathway of ethylene biosynthesis and proved unequivocally the central role of methionine as a precursor of ethylene.
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