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Boron Deficiency Effects on Sugar, Ionome, and Phytohormone Profiles of Vascular and Non-Vascular Leaf Tissues of Common Plantain (Plantago major L.)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pommerrenig, Benjamin Eggert, Kai Bienert, Gerd Patrick |
| Copyright Year | 2019 |
| Abstract | Vascular tissues essentially regulate water, nutrient, photo-assimilate, and phytohormone logistics throughout the plant body. Boron (B) is crucial for the development of the vascular tissue in many dicotyledonous plant taxa and B deficiency particularly affects the integrity of phloem and xylem vessels, and, therefore, functionality of long-distance transport. We hypothesize that changes in the plants' B nutritional status evoke differential responses of the vasculature and the mesophyll. However, direct analyses of the vasculature in response to B deficiency are lacking, due to the experimental inaccessibility of this tissue. Here, we generated biochemical and physiological understanding of B deficiency response reactions in common plantain (Plantago major L.), from which pure and intact vascular bundles can be extracted. Low soil B concentrations affected quantitative distribution patterns of various phytohormones, sugars and macro-, and micronutrients in a tissue-specific manner. Vascular sucrose levels dropped, and sucrose loading into the phloem was reduced under low B supply. Phytohormones responded selectively to B deprivation. While concentrations of abscisic acid and salicylic acid decreased at low B supply, cytokinins and brassinosteroids increased in the vasculature and the mesophyll, respectively. Our results highlight the biological necessity to analyze nutrient deficiency responses in a tissue- rather organ-specific manner. |
| File Format | PDF HTM / HTML |
| DOI | 10.3390/ijms20163882 |
| PubMed reference number | 31395813 |
| Journal | Medline |
| Volume Number | 20 |
| Alternate Webpage(s) | https://res.mdpi.com/d_attachment/ijms/ijms-20-03882/article_deploy/ijms-20-03882.pdf |
| Alternate Webpage(s) | https://doi.org/10.3390/ijms20163882 |
| Journal | International journal of molecular sciences |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
