Periderm and lenticel characterization in relation to potato cultivar, soil moisture and tuber maturity

Tyner, D. N.; Hocart, Mark J.; Lennard, J. H.; Graham, D. C.

doi:10.1007/bf02358244

Cited by 17 publications

(14 citation statements)

References 10 publications

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“…They form early in developing tubers by periclinal divisions of cells beneath the stomata, giving rise to a particular phellogen which produces a type of suberized tissue that is permeable to water and gases (complementary tissue). The phellogen then extends from lenticels to build up a complete layer of native periderm (Adams, 1975; Tyner et al , 1997). The preponderance of the FHT transcriptional activity and protein accumulation in lenticels (Figs 4, 5) agree with an intense activity of the lenticular phellogen in developing tubers.…”

Section: Discussionmentioning

confidence: 99%

The potato suberin feruloyl transferase FHT which accumulates in the phellogen is induced by wounding and regulated by abscisic and salicylic acids

Boher

Serra

Soler

et al. 2013

Journal of Experimental Botany

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The present study provides new insights on the role of the potato (Solanum tuberosum) suberin feruloyl transferase FHT in native and wound tissues, leading to conclusions about hitherto unknown properties of the phellogen. In agreement with the enzymatic role of FHT, it is shown that its transcriptional activation and protein accumulation are specific to tissues that undergo suberization such as the root boundary layers of the exodermis and the endodermis, along with the tuber periderm. Remarkably, FHT expression and protein accumulation within the periderm is restricted to the phellogen derivative cells with phellem identity. FHT levels in the periderm are at their peak near harvest during periderm maturation, with the phellogen becoming meristematically inactive and declining thereafter. However, periderm FHT levels remain high for several months after harvest, suggesting that the inactive phellogen retains the capacity to synthesize ferulate esters. Tissue wounding induces FHT expression and the protein accumulates from the first stages of the healing process onwards. FHT is up-regulated by abscisic acid and down-regulated by salicylic acid, emphasizing the complex regulation of suberin synthesis and wound healing. These findings open up new prospects important for the clarification of the suberization process and yield important information with regard to the skin quality of potatoes.

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Section: Discussionmentioning

confidence: 99%

The potato suberin feruloyl transferase FHT which accumulates in the phellogen is induced by wounding and regulated by abscisic and salicylic acids

Boher

Serra

Soler

et al. 2013

Journal of Experimental Botany

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“…Unlike naturally contaminated tubers, however, it also provides a uniform level of contamination across a seed tuber stock , which facilitates examination of the effect of different levels of seed tuber contamination on blackleg disease development and progeny tuber contamination (Jones et al ., 1994). Inevitably, some variation in level of contamination occurred between cultivars and years, probably reflecting the receptiveness of lenticels to bacterial cells affected by both variety and tuber condition (Pérombelon & Lowe, 1975; Tyner et al ., 1997).…”

Section: Discussionmentioning

confidence: 99%

Relationship between potato seed tuber contamination by Erwinia carotovora ssp. atroseptica, blackleg disease development and progeny tuber contamination

Toth¹,

Sullivan²,

Brierley³

et al. 2003

Plant Pathology

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The relationship between contamination of potato seed tubers with Erwinia carotovora ssp. atroseptica (Eca), blackleg disease development, and the incidence and level of progeny tuber contamination in field grown crops was studied in 1998, 1999 and 2000. Seed tubers were inoculated by vacuum infiltration at three levels (low, intermediate and high) with a streptomycin‐resistant marker strain of Eca (SCRI1039Str) and planted in the field. Blackleg disease development was directly related to the level of seed tuber contamination. The higher the level of seed tuber contamination, the earlier in the season blackleg disease appeared and the greater the final level of disease, which continued to rise as the season progressed. High and low levels of seed tuber contamination were related to high and low incidences of progeny tuber contamination, respectively, at all sampling times. However, an intermediate degree of seed tuber contamination tended to be associated with a low level of blackleg disease, a variable incidence of progeny tuber contamination early in the season but a high incidence later in the season. The level of progeny tuber contamination, derived from seed tubers inoculated at the three different levels of Eca, was categorized into four contamination classes (< 102, 102–103, 103–104 and > 104 marker strain colony‐forming units/mL peel extract). At the lowest level of seed tuber contamination, progeny tuber contamination tended to be in the two lower categories. However, as seed tuber contamination increased, the proportion of contaminated progeny tubers in the two higher categories also increased. Overall, the results suggest that progeny tuber contamination is related to seed tuber contamination and blackleg disease, and that the threshold level of seed tuber contamination remains an important factor in predicting both blackleg disease and tuber health.

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“…One kind of protective film was then formed on skinning injured area after a period of time, probably because of the development of wound-induced suberization. It is also worth noting that the distribution of lenticels (dark spots shown in Figure 5) scattering in injured areas varied within seven days, which may be resulted from the meristematic action of the phellogen and periderm suberization [29,30]. The appearance of variation in regard to the color and texture features may lay the foundation for discrimination of SS and IS.…”

Section: Resultsmentioning

confidence: 99%

CCD-Based Skinning Injury Recognition on Potato Tubers (Solanum tuberosum L.): A Comparison between Visible and Biospeckle Imaging

Gao

Geng

Rao

2016

Sensors

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Skinning injury on potato tubers is a kind of superficial wound that is generally inflicted by mechanical forces during harvest and postharvest handling operations. Though skinning injury is pervasive and obstructive, its detection is very limited. This study attempted to identify injured skin using two CCD (Charge Coupled Device) sensor-based machine vision technologies, i.e., visible imaging and biospeckle imaging. The identification of skinning injury was realized via exploiting features extracted from varied ROIs (Region of Interests). The features extracted from visible images were pixel-wise color and texture features, while region-wise BA (Biospeckle Activity) was calculated from biospeckle imaging. In addition, the calculation of BA using varied numbers of speckle patterns were compared. Finally, extracted features were implemented into classifiers of LS-SVM (Least Square Support Vector Machine) and BLR (Binary Logistic Regression), respectively. Results showed that color features performed better than texture features in classifying sound skin and injured skin, especially for injured skin stored no less than 1 day, with the average classification accuracy of 90%. Image capturing and processing efficiency can be speeded up in biospeckle imaging, with captured 512 frames reduced to 125 frames. Classification results obtained based on the feature of BA were acceptable for early skinning injury stored within 1 day, with the accuracy of 88.10%. It is concluded that skinning injury can be recognized by visible and biospeckle imaging during different stages. Visible imaging has the aptitude in recognizing stale skinning injury, while fresh injury can be discriminated by biospeckle imaging.

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Periderm and lenticel characterization in relation to potato cultivar, soil moisture and tuber maturity

Cited by 17 publications

References 10 publications

The potato suberin feruloyl transferase FHT which accumulates in the phellogen is induced by wounding and regulated by abscisic and salicylic acids

The potato suberin feruloyl transferase FHT which accumulates in the phellogen is induced by wounding and regulated by abscisic and salicylic acids

Relationship between potato seed tuber contamination by Erwinia carotovora ssp. atroseptica, blackleg disease development and progeny tuber contamination

CCD-Based Skinning Injury Recognition on Potato Tubers (Solanum tuberosum L.): A Comparison between Visible and Biospeckle Imaging

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