The release rhythm of Hippophae rhamnoides volatile compounds induced by Trabala vishnou gigantina Yang

doi:10.14088/j.cnki.issn0439-8114.2025.09.014

Abstract

Abstract: The differences in volatile organic compound (VOC) profiles between herbivore-infested and healthy sea buckthorn (Hippophae rhamnoides) plants were systematically analyzed, with particular emphasis placed on the circadian rhythm of VOC release induced by Trabala vishnou gigantina Yang. Dynamic headspace collection combined with gas chromatography-mass spectrometry (GC-MS) was used for analysis. Thirty-three volatiles were detected in infested plants, among which three compounds:Aristolochene, humulene, and hexyl 2-methylbutyrate were newly identified compared to those in healthy plants. Regarding release rhythm, peak volatile release was observed in damaged plants between 6:00 and 9:00, while in healthy plants, release peaks were recorded between 24:00 and 3:00. No release peak was observed in either group between 9:00 and 12:00. Six herbivore-induced volatiles showing significant diurnal variation:Aristolochene, hexyl 2-methylbutyrate, humulene, cis-3-hexenyl acetate, 2-ethylhexanol, and longifolene were all found to peak during the night. Distinct diurnal release patterns were exhibited by each volatile, which were influenced by both plant damage status and circadian rhythm. Generally, higher release levels were observed at night, and lower levels were detected during the day.

Key words: Hippophae rhamnoides, Trabala vishnou gigantina Yang, herbivore-induced plant volatiles(HIPVs), circadian release rhythm

CLC Number:

TANG Shuo, XU Bo-xi, FENG Jiang-shuai, AN Ke-xu, LIU Yong-hua. The release rhythm of Hippophae rhamnoides volatile compounds induced by Trabala vishnou gigantina Yang[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(9): 84-91.

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