The red alga Gracilaria salicornia (c. Agardh) E. Y. Dawson was introduced intentionally to two reefs on O'ahu, Hawai'i, in the 1970s for experimental aquaculture for the agar industry. Some 30 yr later, this species has spread from the initial sites of introduction and is now competing with native marine flora and fauna. The goals of this study were to quantify various aspects of G. salicornia...

Shoots of the halophyte Salicornia bigelovii are larger and more succulent when grown in highly saline environments. This increased growth and water uptake has been correlated with a large and specific cellular accumulation of sodium. In glycophytes, sensitivity to salt has been associated with an inability to remove sodium ions effectively from the cytoplasm in order to protect salt-sensitive ...

Soil salinity and drought are among the environmental stresses that most severely affect plant growth and production around the world. In this study the rhizospheres of Salicornia plants and bulk soils were collected from Sebkhet and Chott hypersaline ecosystems in Tunisia. Depiction of bacterial microbiome composition by Denaturing Gradient Gel Electrophoresis unveiled the occurrence of a high...

Interactions between herbivorous insects and plants storing terpenoids are poorly understood. This study describes the ability of Chrysolina herbacea to use volatiles emitted by undamaged Mentha aquatica plants as attractants and the plant's response to herbivory, which involves the production of deterrent molecules. Emitted plant volatiles were analyzed by GC-MS. The insect's response to plant...

Two tropical macroalgae, Gracilaria salicornia and Padina sanctae-crusis, were exposed to varying concentrations of total Cu and subsequently subjected to photosynthesis-irradiance (P-I) response experiments. The study aimed to determine the effects of total Cu toxicity on the P-I model parameters and growth rate of the macroalgae. The photosynthetic efficiency (α) showed a decreasing pattern w...

In order to evaluate the involvement of fructans in drought tolerance, experiments were conducted using intact plants and excised rhizophores of Vernonia herbacea. The water content in rhizophores of intact plants was maintained for 30 days when plants were watered every 7 and 15 days, whereas plants remained alive up to 60 days without water. Total fructan, oligoto polysaccharides ratio and me...

Forces: Exquisite Selectivity during Oxidation of Olefins by Singlet Oxygen Arunkumar Natarajan,† Lakshmi S. Kaanumalle,† Steffen Jockusch,# Corinne L. D. Gibb,‡ Bruce C. Gibb,‡ Nicholas J. Turro,# and V. Ramamurthy*,† Department of Chemistry, UniVersity of Miami, Coral Gables, Florida 33124, Department of Chemistry, Columbia UniVersity, New York, New York 10027, and Department of Chemistry, Un...

indole ahloids of vinca species are valued greatly in medical sciences, one reason being for their use as powerful anticancer agents. there are four species of vinca in iran: v. rosea, v. major, v. minor and v. herbacea. in previous investigations, we found that these plants have considerable alkaloid similarity (58.8- 75%). therefore, chromosomic and electrophuretic studies followed after inve...