Ethylene functions as a suppressor of volatile production in rice

Mujiono, Kadis; Tohi, Tilisa; Sobhy, Islam S.; Hojo, Yuko; Ho, Nhan Thanh; Shinya, Tomonori; Gàlis, Ivan

doi:10.1093/jxb/eraa341

Cited by 19 publications

(23 citation statements)

References 89 publications

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“…A representative of aromatics, methyl salicylate (MeSA), was somewhat increased in the headspace by simulated herbivory (significant in Figure 3d), while it was also found in non‐treated plants, both internally and externally (Figure 1). This is consistent with our previous findings showing that 8–9 week‐old rice plants accumulate significant amounts of constitutive MeSA (Mujiono et al, 2020).…”

Section: Resultssupporting

confidence: 94%

“…Solid phase micro-extraction (SPME) was used according to Mujiono et al (2020). Frozen leaves in 16 ml glass tubes were defrosted in ice to reduce enzyme activities, and spiked with 5 μl of tetralin (400 ng) in DCM as internal standard.…”

Section: Internal Leaf Volatile Extractionmentioning

confidence: 99%

“…However, such studies are rare, possibly because of technical challenges associated with synchronized extraction of volatiles from leaves and headspace, and subsequent measurement of numerous samples by individual solid phase microextraction (SPME) fibres on gas chromatograph mass spectrometer (GC–MS) (Hou et al, 2017; Vas & Vekey, 2004). As we already possessed an efficient system for trapping headspace volatiles in rice (Sobhy et al, 2017), and recently developed easily applicable methods for extraction of internal leaf volatiles from rice (Mujiono et al, 2020), a high throughput approach was applied in this study to capture, for the first time, both basal and stress‐induced volatile dynamics in rice. Using various molecular approaches, we first aimed to firmly establish the role of oxylipins in volatile emission in rice.…”

Section: Introductionmentioning

confidence: 99%

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Herbivore‐induced and constitutive volatiles are controlled by different oxylipin‐dependent mechanisms in rice

Mujiono

Tohi

Sobhy

et al. 2021

Plant Cell & Environment

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Despite the importance of volatile organic compounds (VOCs) for plants, control mechanisms for their basal and stress-induced biosynthesis and release remain unclear. We sampled and characterized headspace and internal leaf volatile pools in rice (Oryza sativa), after a simulated herbivory treatment, which triggers an endogenous jasmonate burst. Certain volatiles, such as linalool, were strongly upregulated by simulated herbivory stress. In contrast, other volatiles, such as β-caryophyllene, were constitutively emitted and fluctuated according to time of day. Transcripts of the linalool synthase gene transiently increased 1-3 h after exposure of rice to simulated herbivory, whereas transcripts of caryophyllene synthase peaked independently at dawn. Unexpectedly, although emission and accumulation patterns of rice inducible and constitutive VOCs were substantially different, both groups of volatiles were compromised in jasmonate-deficient hebiba mutants, which lack the allene oxide cyclase (AOC) gene. This suggests that rice employs at least two distinct oxylipindependent mechanisms downstream of AOC to control production of constitutive and herbivore-induced volatiles. Levels of the JA precursor, 12-oxo-phytodienoic acid (OPDA), were correlated with constitutive volatile levels suggesting that OPDA or its derivatives could be involved in control of volatile emission in rice.

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Section: Resultssupporting

confidence: 94%

Section: Internal Leaf Volatile Extractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Herbivore‐induced and constitutive volatiles are controlled by different oxylipin‐dependent mechanisms in rice

Mujiono

Tohi

Sobhy

et al. 2021

Plant Cell & Environment

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“…ETHYLENE INSENSITIVE PROTEIN 2/3 ( EIN2/3 ) are suppressed by ethylene, and EINs inhibit type A cytokinin response regulators in CK signalling pathway. Ethylene may also suppress monoterpene accumulation (Mujiono et al ., 2020). External stress factors characteristically induce jasmonic acid (JA), salicylic acid (SA) and ABA syntheses, which often downregulate (red lines) routine growth signalling (e.g.…”

Section: Introductionmentioning

confidence: 99%

Plant volatiles as regulators of hormone homeostasis

Dani

Loreto

2022

New Phytologist

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Summary Some canonical plant hormones such as auxins and gibberellins have precursors that are biogenic volatiles (indole, indole acetonitrile, phenylacetaldoxime and ent‐kaurene). Cytokinins, abscisic acid and strigolactones are hormones comprising chemical moieties that have distinct volatile analogues, and are synthesised alongside constitutively emitted volatiles (isoprene, sesquiterpenes, lactones, benzenoids and apocarotenoid volatiles). Nonvolatile hormone analogues and biogenic volatile organic compounds (BVOCs) evolved in tandem as growth and behavioural regulators in unicellular organisms. In plants, however, nonvolatile hormones evolved as regulators of growth, development and differentiation, while endogenous BVOCs (often synthesised lifelong) became subtle regulators of hormone synthesis, availability, activity and turnover, all supported by functionally redundant components of hormone metabolism. Reciprocal changes in the abundance and activity of hormones, nitric oxide, and constitutive plant volatiles constantly bridge retrograde and anterograde signalling to maintain hormone equilibria even in unstressed plants. This is distinct from transient interference in hormone signalling by stress‐induced and exogenously received volatiles.

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“…Rice, a popular staple food for nearly half of the world's population (Chen et al, 2012; U.S. Department of Agriculture (USDA), 2017), has been having numerous studies carried out on how to effectively mitigate the deterioration of its quality during storage in recent years Mujiono et al, 2020). Wang et al (2018) fabricated a nano packaging material consisting of nano Ag, nano TiO 2 , nano attapulgite, as well as SiO 2 , which was capable of maintaining low oxygen and high CO 2 content in the package, inhibiting mold growth and fatty acid generation, decreasing lipase activity, and reducing the oxidation of lipid and protein.…”

Section: Rice Deterioration Prevention and Controlmentioning

confidence: 99%

Research advance in gas detection of volatile organic compounds released in rice quality deterioration process

Liu

Zhang

et al. 2021

Comp Rev Food Sci Food Safe

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Rice quality deterioration will cause grievous waste of stored grain and various food safety problems. Gas detection of volatile organic compounds (VOCs) produced by deterioration is a nondestructive detection method to judge rice quality and alleviate rice spoilage. This review discussed the research advance of VOCs detection in terms of nondestructive detection methods of rice quality deterioration, applications of VOCs in grain detection, inspection of characteristic gas produced during rice spoilage, rice deterioration prevention and control, and detection of VOCs released by rice mildew and insect attack. According to the main causes of rice quality deterioration and major sources of VOCs with off-odor generated during rice storage, deterioration can be divided into mold and insect infection. The results of literature manifested that researches mainly focused on the infection of Aspergillus in the mildew process and the attack of certain pests in recent years, thus the research scope was limited. In this paper, the gas detection methods combined with the chemometrics to qualitatively analyze the VOCs, as well as the correlation with the number of colonies and insects were further studied based on the common dominant strains during rice mildew, that is, Aspergillus and Penicillium fungi, and the common pests during storage, that is, Sitophilus oryzae and Rhyzopertha dominica. Furthermore, this paper pointed out that the quantitative determination of characteristic VOCs, the numeration relationship between VOCs and the degree of mildew and insect infestation, the further expansion of detection range, and the application of degraded rice should be the spotlight of future research.

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Ethylene functions as a suppressor of volatile production in rice

Cited by 19 publications

References 89 publications

Herbivore‐induced and constitutive volatiles are controlled by different oxylipin‐dependent mechanisms in rice

Herbivore‐induced and constitutive volatiles are controlled by different oxylipin‐dependent mechanisms in rice

Plant volatiles as regulators of hormone homeostasis

Research advance in gas detection of volatile organic compounds released in rice quality deterioration process

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