Inicio  /  Agronomy  /  Vol: 13 Par: 8 (2023)  /  Artículo
ARTÍCULO
TITULO

Plant Spacing Effects on Stem Development and Secondary Growth in Nicotiana tabacum

Na Xu    
Lin Meng    
Fang Tang    
Shasha Du    
Yanli Xu    
Shuai Kuang    
Yuanda Lv    
Wenjing Song    
Yang Li    
Weicong Qi and Yu Zhang    

Resumen

Plant spacing usually refers to distances between plants within and between rows in the field. Different spacing in crop planting would generally influence the size, plant architecture, economic productivity, etc. The present research provided a time course monitoring of stem development in tobacco with different plant spacing. The result showed that cambium activity, vascular bundle thickness, lignin, cellulose, and hemicellulose content, as well as the macronutrient deposition in the stem varied because of the different plant spacing. Furthermore, the genes (NtHB8s and NtNST3s) coding the homologs of HB8 and NST3 transcription factors, which are involved in plant secondary growth, were cloned in tobacco. In the time course, they also indicated diverse expression patterns among altered plant-spacing treatments. Their transcriptomic activities were validated, and the motifs that might bind transcription factors in their promoter regions were predicted. Promoters of NtHB8s and NtNST3s genes were rich in light-response elements; as a result, light might be the main environmental factor in plant spacing to regulate stem secondary growth.

 Artículos similares

       
 
Tsvetelina Krachunova, Martin Scholz, Sonoko D. Bellingrath-Kimura and Knut Schmidtke    
Fodder maize cultivation under low mountain conditions in Central Europe presents obstacles for organic dairy farmers; low temperatures and high precipitation values in spring delay the juvenile development of maize, which leads to lower and fluctuating ... ver más
Revista: Agriculture

 
Aviv Asher, Reut Dagan, Shmuel Galili and Lior Rubinovich    
Quinoa (Chenopodium quinoa Willd., Amaranthaceae) is an environmental stress-resilient crop of increasing global importance. Sowing density is a critical factor in the quinoa cultivation protocol. We evaluated the row-spacing effect on quinoa growth, yie... ver más
Revista: Agriculture

 
Bin Zhang, Haolu Liu, Jicheng Huang, Kunpeng Tian, Cheng Shen, Xianwang Li and Xingsong Wang    
Ramie is an important cash crop in China, and ramie fiber is an important raw material for the textile industry. As a shrub plant, the spatial distribution of the ramie plant is different from that of herbaceous crops, and its plant spacing and row spaci... ver más
Revista: Agriculture

 
Wei Yan, Mingjuan Hu, Kun Li, Jia Wang and Wenyi Zhang    
In view of the problems of the difficulties faced in horizontal planting; high labor intensity, poor operation quality and low economy in the existing sweet potato bare seedling transplanting technology and equipment, combined with the agronomic requirem... ver más
Revista: Agriculture

 
Hui Li, Tengfei He, Hu Liu, Song Shi, Baoqing Wang, Jilei Zhou, Xuechuan Liu, Guojian Wei and Rongfang Zhang    
China is the world?s biggest producer of sweet potato (Ipomoea batatas (L). Lam.), and approximately 55% of the global supply is from China. Raised beds (RB) and raised beds mulched with plastic film (RBF) are the two main sweet potato cultivation system... ver más
Revista: Agriculture