Browsing by Author "Han H"

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    Antagonistic systemin receptors integrate the activation and attenuation of systemic wound signaling in tomato.
    (Elsevier B.V., 2024-12-03) Zhou K; Wu F; Deng L; Xiao Y; Yang W; Zhao J; Wang Q; Chang Z; Zhai H; Sun C; Han H; Du M; Chen Q; Yan J; Xin P; Chu J; Han Z; Chai J; Howe GA; Li C-B; Li C
    Pattern recognition receptor (PRR)-mediated perception of damage-associated molecular patterns (DAMPs) triggers the first line of inducible defenses in both plants and animals. Compared with animals, plants are sessile and regularly encounter physical damage by biotic and abiotic factors. A longstanding problem concerns how plants achieve a balance between wound defense response and normal growth, avoiding overcommitment to catastrophic defense. Here, we report that two antagonistic systemin receptors, SYR1 and SYR2, of the wound peptide hormone systemin in tomato act in a ligand-concentration-dependent manner to regulate immune homeostasis. Whereas SYR1 acts as a high-affinity receptor to initiate systemin signaling, SYR2 functions as a low-affinity receptor to attenuate systemin signaling. The expression of systemin and SYR2, but not SYR1, is upregulated upon SYR1 activation. Our findings provide a mechanistic explanation for how plants appropriately respond to tissue damage based on PRR-mediated perception of DAMP concentrations and have implications for uncoupling defense-growth trade-offs.
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    Behavioral Influences on Crowdfunding SDG Initiatives: The Importance of Personality and Subjective Well-Being
    (MDPI (Basel, Switzerland), 2021-04-01) Kim MJ; Hall CM; Han H; Cumming D
    Crowdfunding is emerging as a significant means by which to finance and advance the 17 United Nations Sustainable Development Goals (SDGs). Generating financial support for the SDGs is now of even more importance because of the economic impacts of COVID-19. However, little research on sustainability crowdfunding has been conducted, particularly with respect to how behavioral influences, such as personality and subjective well-being, affect the willingness of individuals to financially support the different SDGs. To fill this gap, a theoretically comprehensive research model including the big five personality traits typology, value on SDGs, attachment to sustainability crowdfunding, subjective well-being, and three groups of SDGs was constructed and tested. Results reveal that agreeableness has the highest effect on value on SDGs among five personalities, followed by openness and conscientiousness. Unexpectedly, extraversion has a negative impact on value on SDGs and neuroticism has an insignificant effect on value on SDGs. Value on SDGs has a great effect on attachment, followed by subjective well-being. Attachment has the greatest effect on subjective well-being within this research model. Comparing fair distribution, efficient allocation, and sustainable scale groups of SDGs shows substantial differences with respect to the hypotheses.