Stony corals are promising transplant candidates for the ecological engineering of artificial coastal defences such as seawalls they attract and host numerous other organisms. However, exposed to a wide range environmental stressors associated with periods emersion during low tide desiccation changes in salinity, temperature, solar irradiance. All these variables have known deleterious effects ...

The productivity of fruit trees is a linear function of the light intercepted, although the relationship is less tight when greater than 50% of available light is intercepted. This paper investigates the management of light energy in peach using the measurement of whole-tree light interception and gas exchange, along with the absorbed energy partitioning at the leaf level by concurrent measurem...

To investigate photosynthetic characteristics of the subtending leaf at the 2-3rd and 10-11th fruiting branch (FBN, FB2-3, and FB10-11), and their relationship with cotton yield and quality, field experiments were conducted using two cotton cultivars, Kemian 1 and Sumian 15. The results showed that with FBN increasing, chlorophyll (Chl) components, Pn and non-photochemical quenching (NPQ) in th...

A catalytic manganese (Mn) cluster is required for the oxidation of water in the oxygen-evolving complex (OEC) of photosystem II (PSII) in plants. Despite this essential role of Mn in generating the electrons driving photosynthesis, limited information is available on how Mn deficiency affects PSII functionality. We have here used parameters derived from measurements of fluorescence induction k...

Seagrasses typically display vertical zonation patterns in tropical and temperate areas. In East Asia, three Zostera species ( Z. japonica, marina , caespitosa ) are distributed at different water depths, leading to from intertidal subtidal zones. The present study aimed determine whether these could be explained by differences their physiological responses, morphological traits, meadows archit...

Supplemental artificial light in greenhouses is fundamental to achieving sustainable crop production with high yield and quality. This study’s purpose was investigate the efficacy of supplemental (SL) sources on vegetative reproductive growth cherry tomatoes. Four types were applied, including high-pressure sodium lamps (HPS), a narrow-spectrum LED (NSL), two specific full-spectrum lights (SFL1...

This study resolved correlations between changes in xanthophyll pigments and photosynthetic properties in attached and detached shade-grown avocado (Persea americana) leaves upon sun exposure. Lutein epoxide (Lx) was deepoxidized to lutein (L), increasing the total pool by ΔL over 5 h, whereas violaxanthin (V) conversion to antheraxanthin (A) and zeaxanthin (Z) ceased after 1 h. During subseque...

photochemical quenching (q NPQ ) was measured using a pulse amplitude modulated fluorometer. The q NPQ The possible interaction of two stresses, UV-B radiincreased with increasing Cd, while the combination ation and cadmium, applied simultaneously, was of cadmium and UV-B reduced the q NPQ compared to investigated in Brassica napus L. cv. Paroll with that in plants exposed only to cadmium or UV...

Natural capacity has evolved in higher plants to absorb and harness excessive light energy. In basic models, the majority of absorbed photon energy is radiated back as fluorescence and heat. For years the proton sensor protein PsbS was considered to play a critical role in non-photochemical quenching (NPQ) of light absorbed by PSII antennae and in its dissipation as heat. However, the significa...

The potential interactive effects of iron (Fe) limitation and Ocean Acidification in the Southern Ocean (SO) are largely unknown. Here we present results of a long-term incubation experiment investigating the combined effects of CO2 and Fe availability on natural phytoplankton assemblages from the Weddell Sea, Antarctica. Active Chl a fluorescence measurements revealed that we successfully cult...