Biomass and Leaf Acclimations to Ultraviolet Solar Radiation in Juvenile Plants of and .

Despite the negative impacts of increased ultraviolet radiation intensity on plants, these organisms continue to grow and produce under the increased environmental UV levels. We hypothesized that ambient UV intensity can generate acclimations in plant growth, leaf morphology, and photochemical functioning in modern genotypes of and . Coffee plants were cultivated for six months in a mini greenhouse under either near ambient (UVam) or reduced (UVre) ultraviolet regimes.

Inoculation With Is More Efficient in Wild-Type Rice Than in Transgenic Rice Over-Expressing the Vacuolar H-PPase.

Achieving food security in a context of environmental sustainability is one of the main challenges of the XXI century. Two competing strategies to achieve this goal are the use of genetically modified plants and the use of plant growth promoting microorganisms (PGPMs). However, few studies assess the response of genetically modified plants to PGPMs.

Photosynthetic capacity, leaf respiration and growth in two papaya () genotypes with different leaf chlorophyll concentrations.

Golden genotype of papaya (), named for its yellowish leaves, produces fruits very much appreciated by consumers worldwide. However, its growth and yield are considerably lower than those of other genotypes, such as 'Sunrise Solo', which has intensely green leaves. We undertook an investigation with the goal of evaluating key physiological traits that can affect biomass accumulation of both Golden and Sunrise Solo genotypes.