Beyond stress response: OST1 opening doors for plants to grow

Leelyn Chong, Rui Xu, Lixia Ku, Yingfang Zhu

Stress Biology ›› 2022, Vol. 2 ›› Issue (1) : 44. DOI: 10.1007/s44154-022-00069-8

Beyond stress response: OST1 opening doors for plants to grow

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Abstract

The sucrose non-fermenting 1 (SNF1)-related protein kinase 2 (SnRK2) family members have been discovered to regulate abiotic stress response via the abscisic acid (ABA)-independent and dependent signaling pathways. SnRK2.6, also known as Open Stomata 1 (OST1), is a serine/threonine protein kinase that plays critical roles in linking ABA receptor complexes and downstream components such as transcription factors and anion channels to regulate stress response. Asides from its well-known regulatory roles in stomatal movement and cold stress response, OST1 has also been demonstrated recently to modulate major developmental roles of flowering and growth in plants. In this review, we will discuss about the various roles of OST1 as well as the ‘doors’ that OST1 can ‘open’ to help plants perform stress adaptation. Therefore, we will address how OST1 can regulate stomata apertures, cold stress tolerance as well as other aspects of its emerging roles such as balancing flowering and root growth in response to drought.

Keywords

Abiotic stress / OST1/SnRK2.6 / Abscisic acid (ABA) / Flowering / Growth / Development

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Leelyn Chong, Rui Xu, Lixia Ku, Yingfang Zhu. Beyond stress response: OST1 opening doors for plants to grow. Stress Biology, 2022, 2(1): 44 https://doi.org/10.1007/s44154-022-00069-8

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Funding
National Natural Science Foundation of China(31900238)

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