The basic premise of high yield in rice is to improve leaf photosynthetic efficiency and coordinate the sourcesink relationship in rice plants. Quantitative trait loci （QTLs） related to morphological traits and chlo...The basic premise of high yield in rice is to improve leaf photosynthetic efficiency and coordinate the sourcesink relationship in rice plants. Quantitative trait loci （QTLs） related to morphological traits and chlorophyll content of rice leaves were detected at the stages of heading to maturity, and a major QTL （qLSCHL4） related to flag leaf shape and chlorophyll content was detected at both stages in recombinant inbred lines constructed using the indica rice cultivar 93-11 and the japonica rice cultivar Nipponbare. Map-based cloning and expression analysis showed that LSCHL4 is allelic to NAL1, a gene previously reported in narrow leaf mutant of rice. Overexpression lines transformed with vector carrying LSCHL4 from Nipponbare and a near-isogenic line of 93-11 （NIL-9311） had significantly increased leaf chlorophyll content, enlarged flag leaf size, and improved panicle type. The average yield of NIL-9311 was 18.70% higher than that of 93-11. These results indicate that LSCHL4 had a pleiotropic function. Exploring and pyramiding more high-yield alleles resem- bling LSCHL4 for super rice breeding provides an effective way to achieve new breakthroughs in raising rice yield and generate new ideas for solving the problem of global food safety.展开更多
To the Editor： Chest abdominal wall defects are usually the result of tumor resection, infection, radiation, or trauma. Chest abdominal wall neoplasms are classified as primary, locally invading, or metastatic. The m...To the Editor： Chest abdominal wall defects are usually the result of tumor resection, infection, radiation, or trauma. Chest abdominal wall neoplasms are classified as primary, locally invading, or metastatic. The most common primary malignancies in the chest wall are the soft tissue and bone sarcomas.In most patients, the operations of the following defect locations are at the risk of herniation or paradoxical breathing postsurgery： total or subtotal sternal resection including several ribs bilaterally or high lateral resection （more than 3-4 ribs）. In these cases, patients are prone to develop respiratory problems, if the stability is not adequate as early＇ as during the immediate postoperative period .展开更多
文摘The basic premise of high yield in rice is to improve leaf photosynthetic efficiency and coordinate the sourcesink relationship in rice plants. Quantitative trait loci （QTLs） related to morphological traits and chlorophyll content of rice leaves were detected at the stages of heading to maturity, and a major QTL （qLSCHL4） related to flag leaf shape and chlorophyll content was detected at both stages in recombinant inbred lines constructed using the indica rice cultivar 93-11 and the japonica rice cultivar Nipponbare. Map-based cloning and expression analysis showed that LSCHL4 is allelic to NAL1, a gene previously reported in narrow leaf mutant of rice. Overexpression lines transformed with vector carrying LSCHL4 from Nipponbare and a near-isogenic line of 93-11 （NIL-9311） had significantly increased leaf chlorophyll content, enlarged flag leaf size, and improved panicle type. The average yield of NIL-9311 was 18.70% higher than that of 93-11. These results indicate that LSCHL4 had a pleiotropic function. Exploring and pyramiding more high-yield alleles resem- bling LSCHL4 for super rice breeding provides an effective way to achieve new breakthroughs in raising rice yield and generate new ideas for solving the problem of global food safety.
文摘To the Editor： Chest abdominal wall defects are usually the result of tumor resection, infection, radiation, or trauma. Chest abdominal wall neoplasms are classified as primary, locally invading, or metastatic. The most common primary malignancies in the chest wall are the soft tissue and bone sarcomas.In most patients, the operations of the following defect locations are at the risk of herniation or paradoxical breathing postsurgery： total or subtotal sternal resection including several ribs bilaterally or high lateral resection （more than 3-4 ribs）. In these cases, patients are prone to develop respiratory problems, if the stability is not adequate as early＇ as during the immediate postoperative period .
