Breaking dormancy in Cycas revoluta: A study of seed morphological characterization and dormancy mechanisms DOI Creative Commons
Juliana Maria Espíndola Lima, João Almir Oliveira

Journal of Seed Science, Journal Year: 2024, Volume and Issue: 46

Published: Jan. 1, 2024

ABSTRACT: Cycas revoluta seeds exhibit both physical and morphological dormancy, posing significant challenges to their germination. This study investigated the characteristics dormancy mechanisms of C. evaluated methods overcome these dormancies. Seeds were harvested over two consecutive years subjected different treatments. A analysis seed structure was conducted, along with assessments (seed size, weight, moisture content) physiological tests (germination rate, germination speed, mean time germination).Morphological characterization revealed that thick, woody sclerotesta forms an impermeable barrier, while embryos within are often underdeveloped at maturity. Germination first year demonstrated removing significantly enhances rates, naked achieving a 70% rate 30 °C. In second year, soaking in gibberellic acid 200 ppm for 24 hours further promoted germination, though its effect modest compared removal (naked seed). also storing allowed complete development, improving outcomes. These findings suggested mechanical sclerotesta, combined optimal storage conditions, is effective strategy overcoming soak (200 ppm) or water could enhance as well.

Language: Английский

Phytochemistry of the Cycadales DOI

Roy Osborne,

Dennis Wm. Stevenson, Daneel Ferreira

et al.

The Botanical Review, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Language: Английский

Citations

0
Chemical ecology of symbioses in cycads, an ancient plant lineage DOI Creative Commons
Shayla Salzman, Edder D. Bustos‐Díaz, Melissa R. L. Whitaker

et al.

New Phytologist, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Summary Cycads are an ancient lineage of gymnosperms that maintain a plethora symbiotic associations from across the tree life. They have myriad morphological, structural, physiological, chemical, and behavioral adaptations position them as unique system to study evolution, ecology, mechanism symbiosis. To this end, we provided overview cycad symbiosis biology covering insects, bacteria, fungi, discuss most recent advances in underlying chemical ecology these associations.

Language: Английский

Citations

0
Medicinal plants of Sabah (North Borneo): lest we forget DOI Creative Commons

Carynn Tanbuda,

Mazdida Sulaiman,

Pauline Yong Pau Lin

et al.

Pharmaceutical Biology, Journal Year: 2025, Volume and Issue: 63(1), P. 288 - 332

Published: May 2, 2025

The discovery of plants and bioactive compounds with the potential to become botanical or pharmaceutical drugs remains a cornerstone drug innovation. Many these valuable molecules originate from traditional pharmacopeias, repositories centuries-old knowledge that are often underappreciated in modern research. This review highlights medicinal identified Sabah 1922 2024, analyzing their taxonomical distribution, uses, utilization among ethnic groups, for clinical uses. data this were gathered Google Scholar, PubMed, ScienceDirect, Web Science, Internet Archive, Books. A keyword combination "Medicinal" "Plants" "Sabah" yielded 21,700 results. Each result was examined, articles did not contain information relevant topic came non-peer-reviewed journals excluded. remaining 87 selected critically reviewed extract pertinent information. available indicates 696 plant species used Sabah, including 412 angiosperms. These primarily utilized treat diseases symptoms related infections, digestive issues, injuries, pains. Notably, 156 employed by local Sabahan Dusunic, Murutic, Kelabit groups remain unstudied terms phytochemical pharmacological properties, highlighting further investigation. Sabah's offer tremendous discovering natural products therapeutic value.

Language: Английский

Citations

0
Anticancer Effect of Cycas media: Molecular Basis Through Modulation of PI3K/AKT/mTOR Signaling Pathway DOI Creative Commons
Jawaher Alqahtani, Esraa M. Mosalam, Hend E. Abo Mansour

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(21), P. 5013 - 5013

Published: Oct. 23, 2024

Many researchers are focusing on screening the biological activities of plants owing to their safety and possible pharmacological actions. Consequently, we aimed explore antiproliferative cytotoxic properties

Language: Английский

Citations

0
Breaking dormancy in Cycas revoluta: A study of seed morphological characterization and dormancy mechanisms DOI Creative Commons
Juliana Maria Espíndola Lima, João Almir Oliveira

Journal of Seed Science, Journal Year: 2024, Volume and Issue: 46

Published: Jan. 1, 2024

ABSTRACT: Cycas revoluta seeds exhibit both physical and morphological dormancy, posing significant challenges to their germination. This study investigated the characteristics dormancy mechanisms of C. evaluated methods overcome these dormancies. Seeds were harvested over two consecutive years subjected different treatments. A analysis seed structure was conducted, along with assessments (seed size, weight, moisture content) physiological tests (germination rate, germination speed, mean time germination).Morphological characterization revealed that thick, woody sclerotesta forms an impermeable barrier, while embryos within are often underdeveloped at maturity. Germination first year demonstrated removing significantly enhances rates, naked achieving a 70% rate 30 °C. In second year, soaking in gibberellic acid 200 ppm for 24 hours further promoted germination, though its effect modest compared removal (naked seed). also storing allowed complete development, improving outcomes. These findings suggested mechanical sclerotesta, combined optimal storage conditions, is effective strategy overcoming soak (200 ppm) or water could enhance as well.

Language: Английский

Citations

0