Phloematic mobility of <SUP>10</SUP>Boron in kiwifruit (<i>Actinidia deliciosa</i>) mixed shoots

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dc.contributor.authorSotomayor, Carlos
dc.contributor.authorRuiz, Rafael
dc.contributor.authorMunoz, Luis
dc.date.accessioned2025-01-24T00:05:19Z
dc.date.available2025-01-24T00:05:19Z
dc.date.issued2012
dc.description.abstractC. Sotomayor, R. Ruiz, and L. Munoz. 2012. Phloematic mobility of (10)Boron in kiwifruit (Actinidia deliciosa) mixed shoots. Cien. Inv. Agr. 39(3): 563-567. Boron (B) is an essential micronutrient showing restricted mobility in plants, except in species that synthesize polyols. The ability of kiwifruit to mobilize B through phloem transport has not yet been confirmed, despite its ability to synthesize the polyol myo-inositol. This study examined kiwifruit plants in which boric acid enriched with the stable B-10 isotope was applied to the distal leaves of mixed shoots with flowers. At 24, 72 and 144 h, both B-10-treated and un-treated leaves and flowers from treated shoots were sampled and subsequently analyzed via mass spectrometry to determine the resulting B-11/B-10 ratios. Control leaves and flowers showed a natural ratio, varying between 3.82 and 4.05. In contrast, the ratios in treated leaves were 1.57 at 24 h,h 2.06 at 72 h (both of which are significantly different from the control) and similar to the control again after 144 h, at 3.83h. In the flowers from shoots with treated leaves, the ratios were 1.31 at 24 h, h1.48 at 72 h (both different from the control) and 3.67 at 144 h (similar to the control). These results indicate that the B solution was absorbed through the leaves and then rapidly retranslocated to B-demanding sinks, such as flowers, within the first 72 h. This finding clearly indicates that kiwifruit can transport boron through the phloem, which is essential knowledge for the correction of leaf and flower B deficiencies through foliar applications.
dc.fuente.origenWOS
dc.identifier.issn0718-1620
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101834
dc.identifier.wosidWOS:000313400900015
dc.issue.numero3
dc.language.isoen
dc.pagina.final567
dc.pagina.inicio563
dc.revistaCiencia e investigacion agraria
dc.rightsacceso restringido
dc.subjectBoron
dc.subjectfoliar absorption
dc.subjectkiwifruit
dc.subjectphloem mobility
dc.subjectstable isotope
dc.subject.ods02 Zero Hunger
dc.subject.odspa02 Hambre cero
dc.titlePhloematic mobility of <SUP>10</SUP>Boron in kiwifruit (<i>Actinidia deliciosa</i>) mixed shoots
dc.typeartículo
dc.volumen39
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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