Mukhamad Su’udi, Arsetyo Rahardianto, Miatin Alvin Septianasari, Veren Yuliana Saputri, Dwi Setyati, F. Ulum
{"title":"Review Aktivitas Fotosintesis pada Tanaman Sorgum (Sorghum bicolor) dalam Kondisi Cekaman Kekeringan","authors":"Mukhamad Su’udi, Arsetyo Rahardianto, Miatin Alvin Septianasari, Veren Yuliana Saputri, Dwi Setyati, F. Ulum","doi":"10.21107/rekayasa.v15i2.9799","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"48 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dinamika Rekayasa","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21107/rekayasa.v15i2.9799","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
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.
高粱(Sorghum bicolor L. Moench)是一种谷类作物,在印度尼西亚具有作为食品、饲料和工业作物开发的潜力。高粱是一种C4植物,在干热环境下具有高效的优势。干旱胁迫是世界范围内最限制作物生产力的环境因素之一,可由土壤和大气中的水分不足引起。在叶片水分状态下降的情况下,CO2同化速率和气孔导度迅速下降。在较低的胞间CO2浓度下,CO2浓度机制能够使C4光合作用饱和。此外,CO2光呼吸很可能在其离开束鞘细胞之前被修复。非气孔因素的影响包括降低光合酶活性、抑制硝酸盐同化、诱导早衰和改变叶片解剖结构。包括高粱在内的C4植物的光合作用涉及到PEPC和Rubisco酶。干旱还可以引发氧化应激,这是一种由于光合作用过程过度减少而增加活性氧(ROS)的环境条件。