PIN-mediated polar auxin transport facilitates root obstacle avoidance

Cited 21 time in scopus
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dc.contributor.authorHyo Jun Lee-
dc.contributor.authorHyun Soon Kim-
dc.contributor.authorJeong Mee Park-
dc.contributor.authorHye Sun Cho-
dc.contributor.authorJae Heung Jeon-
dc.date.accessioned2020-02-07T16:30:57Z-
dc.date.available2020-02-07T16:30:57Z-
dc.date.issued2020-
dc.identifier.issn0028-646X-
dc.identifier.uri10.1111/nph.16076ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/19255-
dc.description.abstractPlants sense mechanical stimuli to recognise nearby obstacles and change their growth patterns to adapt to the surrounding environment. When roots encounter an obstacle, they rapidly bend away from the impenetrable surface and find the edge of the barrier. However, the molecular mechanisms underlying root-obstacle avoidance are largely unknown. Here, we demonstrate that PIN-FORMED (PIN)-mediated polar auxin transport facilitates root bending during obstacle avoidance. We analysed two types of bending after roots touched barriers. In auxin receptor mutants, the rate of root movement during first bending was largely delayed. Gravity-oriented second bending was also disturbed in these mutants. The reporter assays showed that asymmetrical auxin responses occurred in the roots during obstacle avoidance. Pharmacological analysis suggested that polar auxin transport mediates local auxin accumulation. We found that PINs are required for auxin-assisted root bending during obstacle avoidance. We propose that rapid root movement during obstacle avoidance is not just a passive but an active bending completed through polar auxin transport. Our findings suggest that auxin plays a role in thigmotropism during plant-obstacle interactions.-
dc.publisherWiley-
dc.titlePIN-mediated polar auxin transport facilitates root obstacle avoidance-
dc.title.alternativePIN-mediated polar auxin transport facilitates root obstacle avoidance-
dc.typeArticle-
dc.citation.titleNew Phytologist-
dc.citation.number3-
dc.citation.endPage1296-
dc.citation.startPage1285-
dc.citation.volume225-
dc.contributor.affiliatedAuthorHyo Jun Lee-
dc.contributor.affiliatedAuthorHyun Soon Kim-
dc.contributor.affiliatedAuthorJeong Mee Park-
dc.contributor.affiliatedAuthorHye Sun Cho-
dc.contributor.affiliatedAuthorJae Heung Jeon-
dc.contributor.alternativeName이효준-
dc.contributor.alternativeName김현순-
dc.contributor.alternativeName박정미-
dc.contributor.alternativeName조혜선-
dc.contributor.alternativeName전재흥-
dc.identifier.bibliographicCitationNew Phytologist, vol. 225, no. 3, pp. 1285-1296-
dc.identifier.doi10.1111/nph.16076-
dc.subject.keywordobstacle avoidance-
dc.subject.keywordPIN-
dc.subject.keywordpolar auxin transport-
dc.subject.keywordroot bending-
dc.subject.keywordthigmotropism-
dc.subject.localobstacle avoidance-
dc.subject.localPIN-
dc.subject.localPINS-
dc.subject.localpolar auxin transport-
dc.subject.localroot bending-
dc.subject.localthigmotropism-
dc.description.journalClassY-
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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