English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Background: The influence of soil nutrients on biosynthesis of secondary metabolites from tropical trees has been poorly investigated. Questions: Does the deprival of Ca 2+ and K + influence the production of pharmacologically active compounds in the seedling of Calophyllum brasiliense ? Species study : Calophyllum brasiliense Cambess. Study site: Los Tuxtlas, Veracruz, Mexico; November 2005 to November 2009. Methods: The seedlings were obtained from seeds and subjected to different hydroponic treatments: 1) modified Hoagland solution (MHS), 2) MHS-Ca 2+ , and 3) MHS-K + . Growth, height, foliar biomass, and HPLC analysis were performed after 7 months. Results: Under hydroponic conditions Ca 2+ and K + deficiency induced the mortality of 53 % and 28 % of the seedlings, respectively. The foliar biomass, and plant height of the survivors were also drastically reduced. MHS-K + treatment induced a 15, 4.2 and 4.3-fold decrease for calanolides B, C, and apetalic acid in the leaves, respectively. MHS-Ca 2+ treatment induced a decrease of 4.3, and 2.4-fold for calanolide B, and C, respectively. Conclusion: Ca 2+ is essential for survival of C. brasiliense seedlings under hydroponic conditions, Ca 2+ and K + are critical for growth, foliar production, and biosynthesis of apetalic acid, and calanolide B.

botanical sciences/botan‪ical sciences

The biosynthesis of pharmacologically active compounds in Calophyllum brasiliense seedlings is influenced by calcium and potassium under hydroponic conditions