| Ankumah R O, Khan V, Mwamba K, Kpomblekou A K. 2003. The influence of source and timing of nitrogen fertilizers on yield and nitrogen use efficiency of four sweet potato cultivars. Agriculture Ecosystems & Environment, 100, 201–207.Bai H, Euring D J, Volmer K, Janz D, Polle A. 2013. The nitrate transporter (NRT) gene family in poplar. PLOS ONE, 8, e72126.Baroja-Fernández E, Muñoz F J, Li J, Bahaji A, Almagro G, Montero M, Etxeberria E, Hidalgo M, Sesma M T, Pozueta-Romero J. 2012. Sucrose synthase activity in sus1/sus2/sus3/sus4 Arabidopsis mutant is sufficient to support normal cellulose and starch production. Proceedings of the National Academy of Sciences of the United States of America, 109, 321–326.Brown R E, Jarvis K L, Hyland K J. 1989. Protein measurement using bicinchoninic acid: Elimination of interfering substances. Analytical Biochemistry, 180, 136–139.Chen A Q, He S A, Li F F, Li Z, Ding M Q, Liu Q P, Rong J K. 2012. Analyses of the sucrose synthase gene family in cotton: Structure, phylogeny and expression patterns. BMC Plant Biology, 12, 1–17.Chen Z H, Wang Y Z, Wang J W, Babla M, Z C C, CarcíaMata C , Sani E, Differ C, Mak M, Hills A, Amtmann A, Blatt M R. 2016. Nitrate reductase mutation alters potassium nutrition as well as nitric oxide-mediated control of guard cell ion channels in Arabidopsis. New Phytologist, 209, 1456–1469.Davenport S, Lay P L, Sanchez-Tamburrrino J P. 2015. Nitrate metabolism in tobacco leaves overexpressing Arabidopsis nitrite reductase. Plant Physiology and Biochemistry, 97, 96–107.Evans J R. 1989. Photosynthesis and nitrogen relationships in leaves of C3 plants. Oecologia, 78, 9–19.Fan X R, Xie D, Chen J G, Lu H Y, Xu Y L, Ma C, Xu G H. 2014. Over-expression of OsPTR6, in rice increased plant growth at different nitrogen supplies but decreased nitrogen use efficiency at high ammonium supply. Plant Science, 227, 1–11.Ferrario-Méry S, Valadier M, Foyer C H. 1998. Overexpression of nitrate reductase in tobacco delays drought-induced decreases in nitrate reductase activity and mRNA. Plant Physiology, 117, 293–302.Fragoso S, Espíndola L, Páez-Valencia J, Gamboa A, Camacho Y, Martínez-Barajas E. Coello P. 2009. SnRK1 isoforms AKIN10 and AKIN11 are differentially regulated in Arabidopsis plants under phosphate starvation. Plant Physiology, 149, 1906–1916.Halford N G, Hey S, Jhurreea D, Laurrie S, McKibbin R S, Paul M, Zhang Y H. 2003. Metabolic signalling and carbon partitioning: Role of Snf1-related (SnRK1) protein kinase. Journal of Experimental Botany, 54, 467–475.Jiang T, Zhai H, Wang F B, Yang N K, Wang B, He S Z, Liu Q C. 2013. Cloning and characterization of a carbohydrate metabolism-associated gene IbSnRK1 from sweetpotato. Scientia Horticulturae, 158, 22–32.Kang G Z, Liu G Q, Peng X Q, Wei L T, Wang C Y, Zhu Y J, M Y, Jiang Y M, Guo T C. 2013. Increasing the starch content and grain weight of common wheat by overexpression of the cytosolic AGPase large subunit gene. Plant Physiology and Biochemistry, 73, 93–98.Kiba T, Feria-Bourrellier A, Lafouge F, Lezhneva L, Boutet-Mercey S, Orsel M, Bréhaut V, Miller A, Daniel-Vedele F, Sakaibara H, Krapp A. 2012. The Arabidopsis nitrate transporter NRT2.4 plays a double role in roots and shoots of nitrogen-starved plants. The Plant Cell, 24, 245–258.Lam H, Coschigano K T, Oliveira I C, Melo-Oliveira R, Coruzzi G M. 1996. The molecular-genetics of nitrogen assimilation into amino acids in higher plants. Plant Biology, 47, 569–593.Lezhneva L, Kiba T, Feria-Bourrellier A B, Lafouge F, Boutet-Mercey S, Zoufan P, Sakakibara H, Daniel-Vedele F, Krapp A . 2014. The Arabidopsis nitrate transporter NRT2.5 plays a role in nitrate acquisition and remobilization in nitrogen-starved plants. The Plant Journal, 80, 230–241.Li G J, Peng F T, Zhang L, Shi X X, Wang Z Y. 2010. Cloning and characterization of a SnRK1-encoding gene from Malus hupehensis Rehd. and heterologous expression in tomato. Molecular Biology Reports, 37, 947–954.Liu D G, He S Z, Song X J, Zhai H, Liu N, Zhang D D, Ren Z T, Liu Q C. 2015. IbSIMT1, a novel salt-induced methyltransferase gene from Ipomoea batatas, is involved in salt tolerance. Plant Cell, Tissue and Organ Culture, 120, 701–715.Liu D G, He S Z, Zhai H, Wang L J, Zhao Y, Wang B, Li R J, Liu Q C. 2014. Overexpression of IbP5CR, enhances salt tolerance in transgenic sweetpotato. Plant Cell, Tissue and Organ Culture, 117, 1–16.Liu Q C. 2017. Improvement for agronomically important traits by gene engineering in sweetpotato. Breeding Science, 67, 15–26.Martí H R, Mills H A. 2002. Nitrogen and potassium nutrition affect yield, dry weight partitioning, and nutrient-use efficiency of sweet potato. Communications in Soil Science and Plant Analysis, 33, 287–301.Masclaux-Daubresse C, Daniel-Vedele F, Dechorgnat J, Chardon F, Gaufichon L, Suzuki A. 2010. Nitrogen uptake, assimilation and remobilization in plants: Challenges for sustainable and productive agriculture. Annals of Botany, 105, 1141–1157.McKibbin R S, Muttucumaru N, Paul M J, Powers S J, Burrell M M, Coates S , Purcell P C, Tiessen A, Geigenberger P, Halford N G. 2006. Production of high-starch, low-glucose potatoes through overexpression of the metabolic regulator SnRK1. Plant Biotechnology Journal, 4, 409–418.Nunes-Nesi A, Fernie A R, Stitt M. 2010. Metabolic and signaling aspects underpinning the regulation of plant carbon nitrogen interactions. Molecular Plant, 3, 973–996.Orsel M, Filleur S, Fraisier V, Daniel-Vedele F. 2002. Nitrate transport in plants: Which gene and which control? Journal of Experimental Botany, 53, 825–833.Schmittgen T D, Livak K J. 2008. Analyzing real-time PCR data by the comparative CT method. Nature Protocols, 3, 1101–1108.Seng S S, Wu J, Sui J J, Wu C Y, Zhong X H, Liu C, Liu C, Gong B H, Zhang F Q, He J N, Yi M F. 2016. ADP-glucose pyrophosphorylase gene plays a key role in the quality of corm and yield of cormels in gladiolus. Biochemical and Biophysical Research Communications, 474, 206–212.Tobin A K, Bowsher C G. 2005. Nitrogen and carbon metabolism in plastids: Evolution, integration, and coordination with reactions in the cytosol. Advances in Botanical Research, 42, 113–165.Ukom A N, Ojimelukwe P C, Alamu E O. 2011. All trans-cis β-carotene content of selected sweet potato (Ipomoea batatas (L.) lam) varieties as influenced by different levels of nitrogen fertilizer application. African Journal of Food Science, 5, 131–137.Vincentz M, Moureaux T, Leydecker M, Vaucheret H, Caboche M. 1993. Regulation of nitrate and nitrite reductase expression in nicotiana plumbaginifolia leaves by nitrogen and carbon metabolites. The Plant Journal, 3, 315–324.Wang B, Zhai H, He S Z, Zhang H, Ren Z T, Zhang D D, Liu Q C. 2016. A vacuolar Na+/H+ antiporter gene, IbNHX2, enhances salt and drought tolerance in transgenic sweetpotato. Scientia Horticulturae, 201, 153–166.Wang X L, Peng F T, Li M J, Yang L, Li G J. 2012. Expression of a heterologous SnRK1 in tomato increases carbon assimilation, nitrogen uptake and modifies fruit development. Journal of Plant Physiology, 169, 1173–1182.Wei L T, Wang L N, Yang Y, Liu G Y, Wu Y F, Guo T C, Kang G Z. 2015. Abscisic acid increases leaf starch content of polyethylene glycol-treated wheat seedlings by temporally increasing transcripts of genes encoding starch synthesis enzymes. Acta Physiologiae Plantarum, 37, 1–6.Xiao G Q, Qin H, Zhou J H, Quan R D, Lu X Y, Huang R F, Zhang H W. 2016. OsERF2 controls rice root growth and hormone responses through tuning expression of key genes involved in hormone signaling and sucrose metabolism. Plant Molecular Biology, 90, 293–302.Yu B, Zhai H, Wang Y P, Zang N, He S Z, Liu Q C. 2007. Efficient Agrobacterium tumefaciens-mediated transformation using embryogenic suspension cultures in sweetpotato, Ipomoea batatas (L.) Lam. Plant Cell, Tissue and Organ Culture, 90, 265–273.Zhao B, Liu Z D, Ata-UI-Karim S T, Xiao J F, Liu Z G, Qi A Z, Ning D F, Nan J Q, Duan A W. 2016. Rapid and nondestructive estimation of the nitrogen nutrition index in winter barley using chlorophyll measurements. Field Crops Research, 185, 59–68. |
