Assessment of genetic diversity of thirty Tunisian fig (Ficus carica L.) accessions using pomological traits and SSR markers

Essid, Awatef; Aljane, Fateh; Neily, Mohamed Hichem; Ferchichi, Ali; Hormaza, J. I.

doi:10.1007/s11033-020-06051-9

Cited by 5 publications

(4 citation statements)

References 45 publications

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“…A variety of genetic diversity indices revealed that the F. hirta in China maintained abundant genetic variation at species level ( H e = 0.706, H o = 0.638). Compared with previous studies on congeneric dioecious fig species, the genetic diversity of F. hirta was higher than those ( H e = 0.370—0.663) of F. carica , F. hispida , F. heterostyla , F. squamosa and F. pumila [ 22 , 23 ] . At population level, all populations also maintained high genetic diversity ( H e > 0.6).…”

Section: Discussioncontrasting

confidence: 88%

High genetic diversity and low population differentiation of a medical plant Ficus hirta Vahl., uncovered by microsatellite loci: implications for conservation and breeding

Lü

Chen

et al. 2022

BMC Plant Biol

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Background Wuzhimaotao (Radix Fici Hirtae) originates from the dry root of Ficushirta (Moraceae), which is widely known as a medical and edible plant distributed in South China. As the increasing demand for Wuzhimaotao, the wild F.hirta has been extremely reduced during the past years. It is urgent to protect and rationally develop the wild resources of F.hirta for its sustainable utilization. However, a lack of genetic background of F.hirta makes it difficult to plan conservation and breeding strategies for this medical plant. In the present study, a total of 414 accessions of F.hirta from 7 provinces in southern China were evaluated for the population genetics using 9 polymorphic SSR markers. Results A mean of 17.1 alleles per locus was observed. The expected heterozygosity (He) varied from 0.142 to 0.861 (mean = 0.706) in nine SSR loci. High genetic diversity (He = 0.706, ranged from 0.613 to 0.755) and low genetic differentiation among populations (G’ST = 0.147) were revealed at population level. In addition, analysis of molecular variance (AMOVA) indicated that the principal molecular variance existed within populations (96.2%) was significantly higher than that among populations (3.8%). Meanwhile, the three kinds of clustering methods analysis (STRUCTURE, PCoA and UPGMA) suggested that the sampled populations were clustered into two main genetic groups (K = 2). Mantel test showed a significant correlation between geographic and genetic distance among populations (R2 = 0.281, P < 0.001). Pollen flow, seed flow and/or geographical barriers might be the main factors that formed the current genetic patterns of F.hirta populations. Conclusions This is a comprehensive study of genetic diversity and population structure of F.hirta in southern China. We revealed the high genetic diversity and low population differentiation in this medicinal plant and clarified the causes of its current genetic patterns. Our study will provide novel insights into the exploitation and conservation strategies for F.hirta.

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Section: Discussioncontrasting

confidence: 88%

High genetic diversity and low population differentiation of a medical plant Ficus hirta Vahl., uncovered by microsatellite loci: implications for conservation and breeding

Lü

Chen

et al. 2022

BMC Plant Biol

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“…Due to its adaptation capacity to diverse soil and climate conditions, fig is cultivated throughout Tunisia from the south to the north, and from the east to the west, covering approximately 14,000 ha (M.A.R.H.P, 2019). More than 50% of the total fig production originates mainly from the coastal zones, as well as from some Northern and Southern mountainous areas (Essid et al, 2021; Mars et al, 2009). In fact, with around 28,000 tons, representing 3% of total world production in 2019, Tunisia is ranked ninth fig producer after Turkey, Egypt, Morocco, Algeria, Iran, Spain, Syria and United States (M.A.R.H.P, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…More than 50% of the total fig production originates mainly from the coastal zones, as well as from some Northern and Southern mountainous areas (Essid et al, 2021;Mars et al, 2009). In fact, with around 28,000 tons, representing 3% of total world production in 2019, Tunisia is ranked ninth fig producer after Turkey, Egypt, Morocco, Algeria, Iran, Spain, Syria and United States (M.A.R.H.P, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…An increased interest in improving fig production is taking place in Tunisia (Essid et al, 2021) and new plantations were established in many irrigated zones for commercial exportations of dried figs (Aljane & Ferchichi, 2010). Nevertheless, this crop is subjected to serious abiotic and biotic stresses (Mars, 2003); among them, fungal diseases can cause yearly serious losses of production.…”

Section: Introductionmentioning

confidence: 99%

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First report of fig tree dieback caused by Lasiodiplodia theobromae in Tunisia

Jabnoun‐Khiareddine

Abdallah

Mars

et al. 2022

Journal of Phytopathology

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In Tunisia, common fig (Ficus carica L., Moraceae) is a very ancient fruit crop, very important and still regaining interest. It is cultivated throughout Tunisia from the south to the north and from the east to the west. In July 2020, a severe unusual branch dieback and stem canker was observed on fig cv. ‘Zidi’ trees in a commercial orchard in north‐eastern Tunisia. Disease incidence was 50% and symptoms observed on the 10‐year‐old infected trees included wilt, defoliation, branch dieback and trunk and shoot cankers. The current study aimed to characterize the pathogen (s) associated with observed fig dieback and to study their pathogenicity. The causal agent has been identified as belonging only to the species Lasiodiplodia theobromae based on morphological characters and phylogenetic analyses, using combined sequences of ITS, tef1 and β‐tubulin (tub2) genes. Pathogenicity tests performed on 1‐year‐old detached and green shoots demonstrated that L. theobromae was pathogenic to common fig cv. ‘Zidi’. Symptom development was visible after 7–15 days of incubation at 25°C showing the aggressive behaviour of L. theobromae towards fig shoots. Cvs. ‘Chetoui’, ‘Zidi’, ‘Bidhi Bghal’ and ‘Bither Abyadh’ were less susceptible compared to the more susceptible cvs. ‘Soltani’ and ‘Bidhi 2’. To our knowledge, this study is the first report on common fig canker and dieback disease caused by L. theobromae in Tunisia and Africa. Considering the severe and rapid progress of this disease, prevention and management strategies should be implemented urgently to reduce its incidence and reduce fig tree losses.

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