Citrus canker disease caused by Xanthomonas citri subsp. citri (Xcc) is one of the most devastating biotic stresses affecting the citrus industry. Meiwa kumquat (Fortunella crassifolia) is canker-resistant, while Newhall navel orange (Citrus sinensis Osbeck) is canker-sensitive. To understand the molecular mechanisms underlying the differences in responses to Xcc, transcriptomic profiles of the...

Seasonal variations in freezing tolerance, water content, water and osmotic potential, and levels of soluble sugars of leaves of field-grown Valencia orange (Citrus sinensis) trees were studied to determine the ability of citrus trees to cold acclimate under natural conditions. Controlled environmental studies of young potted citrus trees, spinach (Spinacia pleracea), and petunia (Petunia hybri...

An efficient protocol for the genetic transformation of cell suspension cultures of several citrus cultivars using Agrobacterium is described. Cell suspension cultures of Citrus sinensis ‘Hamlin’, ‘Valencia’ and ‘OLL8’ (an early maturing ‘Valencia’ like somaclone), Citrus unshiu ‘Okitsu wase’ and Citrus reticulata ‘Ponkan’ and ‘W. Murcott’ were transformed using A. tumefaciens EHA105. It was de...

Abstract Polymethoxylated flavones (PMFs), the main form of in citrus, are derived from flavone branch flavonoid biosynthesis pathway. Flavone synthases (FNSs) enzymes that catalyze synthesis flavanones. However, FNS citrus has not been characterized yet. Here, we identified two type II FNSs, designated CitFNSII-1 and CitFNSII-2, based on phylogenetics transcriptome analysis. Both recombinant C...

In the present study, to investigate the mechanisms regulating carotenoid accumulation in citrus, a culture system was set up in vitro with juice sacs of three citrus varieties, Satsuma mandarin (Citrus unshiu Marc.), Valencia orange (Citrus sinensis Osbeck), and Lisbon lemon (Citrus limon Burm.f.). The juice sacs of all the three varieties enlarged gradually with carotenoid accumulation. The c...

Darjeeling mandarin (Citrus reticulata Blanco) is one of the most popular fruit crops and Kalimpong districts West Bengal, India. The cultivation crop significantly affected by attack Chinese citrus fly Bactrocera (Tetradacus) minax (Enderlein) (Diptera: Tephritidae). Survey was conducted in months November December 2017 2018 to find out dimension problem along with its distribution, detection ...

The induction of callus formation in cultured buds of Shamouti orange (Citrus sinensis [L.] Osbeck) by abscisic acid (ABA) is a multiphasic process. (Altman, and Goren 1974 Physiol Plant 32: 55.) A study of the mediation by ethylene on this effect of ABA was undertaken. It was found that: (a) ethylene and (2-chloroethyl) phosphonic acid, as well as ABA, induced callus formation; (b) callus indu...