Papers by Veren Yuliana Saputri
Rekayasa
Sorghum (Sorghum bicolor L. Moench) is a cereal crop that has the potential to be developed in In... more Sorghum (Sorghum bicolor L. Moench) is a cereal crop that has the potential to be developed in Indonesia as a food, feed and industrial crop. Sorghum is a C4 plant that has the advantage of efficiency in hot and dry environments. Drought stress is one of the most limiting environmental factors for crop productivity worldwide, and can be caused by water deficits in the soil and in the atmosphere. On the decreasing leaf water status, the rate of CO2 assimilation and the conductance of stomata decreased rapidly. The CO2 concentration mechanism is able to saturate C4 photosynthesis under the relatively low intercellular CO2 concentration. In addition, CO2 photorespiration is likely to be repaired before it exits the bundle sheat cells. The effects of non-stomatal factors include reduced activity of photosynthetic enzymes, inhibition of nitrate assimilation, induction of premature aging, and changes in leaf anatomy. Photosynthesis in C4 plants, including sorghum, involves, others, the PEPC and Rubisco enzymes. Drought can also trigger oxidative stress, which is an environmental condition that has increased Reactive Oxygen Species (ROS) due to an over reduction of the photosynthesis process.
Jurnal Penelitian Sains
Shootless orchids live in the moist and epiphytic habitat. The orchid, also known as ghost orchid... more Shootless orchids live in the moist and epiphytic habitat. The orchid, also known as ghost orchid, has a particular characteristic that is root as the source organ. One example of shootless orchid is Taeniophyllum biocellatum. The root is green, has velamen, and bundles of vessels that play an important role in the process of assimilate translocation. The process of translocation assimilates starts from the producer cell to the sieve element and ends at the sink organ. Simplasmic and apoplasmic transport types are based on the presence or absence of the plasmodesmata channel. The compounds contained in photosynthates include organic substances such as sucrose, hormones, and proteins while inorganic includes water, minerals, nitrogen and others. The allocation and proportion of photosynthates depend on the dominant needs of the growth and development of the shootless orchid.
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Papers by Veren Yuliana Saputri