Removal of the stem apex, which is the primary source of auxin in the plant, significantly decreased the transcript level of PtdHB5 in the xylem tissue by nearly four-fold (mean log2 ratio = -1.9739) and had a similar effect PtdHB7 but it was not found to be statistically significant (mean log2 ratio = -1.6421; p-value = 0.0776), and did not affect PtdHB1 (Table 3).
The primary source of retinol is dietary plant-based β-carotene, which is symmetrically cleaved by the enzyme β-carotene monooxygenase 1 (BCMO1) into two molecules of retinal.
80% of the world population rely on plants as their primary source of medicines, and between 50,000 - 80,000 plant species are used worldwide for their curative properties.
Since the nectar from flowers is their primary source of food, select nectar-rich plants to lure butterflies and hummingbirds to your garden.
The local communities of different regions of Pakistan have been using medicinal plants as a primary source of their health care system and infact these medicinal plants are used to cure a large number of diseases [ 2].
The winter accumulation of snow, however, is often the primary source of moisture for the summer growth of plants.
The agro-wastes such as decaying part of plants are the primary source of organic matter in soil [3].
The primary source of atmospheric methanol is emissions from living plants, followed by smaller source contributions from the decay of dead plant matter, biomass burning, direct emissions from anthropogenic activities, the ocean and atmospheric production (Seco et al., 2007).
Coal-burning power plants are the primary source of the main chemical, nitrogen oxide.
Those emissions — principally sulfur dioxide produced by coal-burning power plants — are the primary source of acid rain, and by the nineteen-seventies it had become clear that they were causing grave damage to the environment, and to the health of many Americans.
