Abstract
The application of brassinosteroids (BR) is associated with increased tolerance to various stresses such as those induced by pathogens, temperature, salinity and drought. Here, we studied the influence of BRs analogues on the leaf senescence of papaya juvenile plants. The objective was to determine whether BRs affect plant growth and leaf senescence by promoting or inhibiting the degradation of chlorophyll and/or leaf abscission. Two-month-old plants were divided into five treatments: C (control without BR application); BRWC (BR applied in the whole canopy); BRL1 (BR applied in the youngest fully expanded leaf, L1); BRL2 (BR applied in L2 which is the secondly more mature leaf in relation to L1) and BRL3 (BR applied in L3 which is the third more mature leaf in relation to L2). We concluded that BRs do not interfere with the senescence of the youngest leaf (L1) but in older leaves (L3) BRWC maintains the leaves greener and attached to the plant for a longer time when compared to the leaves from the other treatments. BR application in whole-canopy increased the plant height, and it caused a delay in leaf senescence and, consequently, in leaf abscission. In addition, hyponastic leaves developed after BR-application in the whole-canopy. The senescence process and leaf abscission in papaya, stimulated by exogenous BRs, were directly related to leaf age.
References
Ali B (2017) Practical applications of brassinosteroids in horticulture—some field perspectives. Sci Hort 225:15–21
Bajguz A, Niczyporuk AP (2014) Interactive effect of brassinosteroids and cytokinins on growth, chlorophyll, monosaccharide and protein content in the green alga Chlorella vulgaris (Trebouxiophyceae). Plant Physiol Biochem 80:176–183
Breeze E, Harrison E, McHattie S, Hughes L, Hickman R, Hill C, Kiddle S, Kim YS, Penfold CA, Jenkins D et al (2011) High-resolution temporal profiling of transcripts during Arabidopsis leaf senescence reveals a distinct chronology of processes and regulation. Plant Cell 23:873–894
Campostrini E, Glenn DM (2007) Ecophysiology of papaya: a review. Braz J Plant Physiol 19:413–424
Can S, Amasino RM (1997) Making sense of senescence-molecular genetic regulation and manipulation of leaf senescence. Plant Physiol 113:313–319
Chung Y, Kwon SI, Choe S (2014) Antagonistic regulation of Arabidopsis growth by brassinosteroids and abiotic stresses. Mol Cells 37(11):795–803
Enders TA, Strader LC (2015) Auxin activity: past, present, and future. Am J Bot 102:1–17
Fariduddin Q, Ahmad A, Hayat S (2004) Responses of Vigna radiata to foliar application of 28-homobrassinolide and kinetin. Biol Plant 48:465–468
Freitas SJ, Santos PC, Carvalho AJC, Berilli SS, Gomes MMA (2012) Brassinosteroid and nitrogen fertilization on growth and nutritional status of seedlings from pineapple sectioning stem. Rev Bras Frutic 34:612–618
Gomes MMA (2011) Physiological effects related to brassinosteroid application in plants. In: Hayat S, Ahmad A (eds) Brassinosteroids: a class of plant hormone. Springer, Dordrecht, pp 193–242
Gomes MMA, Netto AT, Campostrini E, Bressan-Smith R, Zullo MAT, Ferraz TM, Siqueira LN, Leal NR, Núñez-Vázquez M (2013) Brassinosteroid analogue affects the senescence in two papaya genotypes submitted to drought stress. Theor Exp Plant Phys 25:186–195
Guiboileau A, Sormani R, Meyer C, Masclaux-Daubresse C (2010) Senescence and death of plant organs: nutrient recycling and developmental regulation. C R Biol 333:382–391
Hartmann J, Stührwhldt N, Dahlke RI, Sauter M (2013) Phytosulfokine control of growth occurs in the epidermis, is likely to be non-cell autonomous and is dependent on brassinosteroids. Plant J 73:579–590
He YJ, Xu RJ, Zhao YJ (1996) Enhancement of senescence by epibrassinolide in leaves of mung bean seedlings. Acta Phytophysiol Sin 22:58–62
He Y, Tang W, Swain JD, Green AL, Jack TP, Gan S (2001) Networking senescence-regulating pathways by using Arabidopsis enhancer trap lines. Plant Physiol 126:707–716
Hepworth J, Lenhard M (2014) Regulation of plant lateral-organ growth by modulating cell number and size. Curr Opin Plant Biol 17:36–42
Jiménez VM, Mora-Newcomer E, Gutiérrez-Souto MV (2014) Biology of the papaya plant. In: Ming R, Moore PH (eds) Plant genetics and genomics: crops and models. Springer, New York, pp 17–33
Keuskamp DH, Sasidharan R, Vos I, Peeters AJM, Voesenek LACJ, Pierik R (2011) Blue-light-mediated shade avoidance requires combined auxin and brassinosteroid action in Arabidopsis seedlings. Plant J 67:208–217
Li JM, Nagpal P, Vitart V, McMorris TC, Chory J (1996) A role for brassinosteroids in light dependent development of Arabidopsis. Science 272:398–401
Lima RSN, Figueiredo FAMMA, Martins AO, Deus BCS, Ferraz TM, Gomes MMA, Sousa EF, Glenn DM, Campostrini E (2015) Partial rootzone drying (PRD) and regulated deficit irrigation (RDI) effects on stomatal conductance, growth, photosynthetic capacity, and water-use efficiency of papaya. Sci Hortic 183:13–22
Liu J, Gao H, Wang X, Zheng Q, Wang C, Wang X, Wang Q (2014) Effects of 24-epibrassinolide on plant growth, osmotic regulation and ion homeostasis of salt-stressed canola. Plant Biol 16:440–450
Ming R, Yu Q, Blas A, Chen C, Na JK, Moore PH (2008) Genomics of papaya, a common source of vitamins in the tropics. In: Moore PH, Ming R (eds) Genomics of tropical crop plants. Springer, New York, pp 405–420
Polko JK, van Zanten M, van Rooij JA, Marée AFM, Voesenek LACJ, Tarkowská D, Strnad M, Voesenek LACJ, Peeters AJM, Pierik R (2012) Ethylene-induced differential petiole growth in Arabidopsis thaliana involves local microtubule reorientation and cell expansion. New Phytol 193:339–348
Polko JK, Pierik R, van Zanten M, Tarkowská D, Strnad M, Voesenek LACJ, Peeters AJM (2013) Ethylene promotes hyponastic growth through interaction with ROTUNDIFOLIA3/CYP90C1 in Arabidopsis. J Exp Bot 64:613–624
Ribeiro Junior JI (2001) Análises estatísticas no SAEG. Universidade Federal de Viçosa, Viçosa, MG
Rogers H, Munné-Bosch S (2016) Production and scavenging of reactive oxygen species and redox signaling during leaf and flower senescence: similar but different. Plant Physiol 171:1560–1568
Sağlam-Çağ S (2007) The effects of epi-brassinolide on senescence in wheat leaves. Biotechnol Biotechnol Equip 21:63–65
Sana NH, Rahman A (2014) Comparative changes in metabolism of Vigna radiata by foliar and root application of brassinolide at different concentrations. Int J Plant Physiol Biochem 6:56–65
Sandalio LM, Rodríguz-Serrano M, Romero-Puertas MC (2016) Leaf epinasty and auxin: a biochemical and molecular overview. Plant Sci 253:187–193
Schippers JHM (2015) Transcriptional networks in leaf senescence. Curr Opin Plant Biol 27:77–83
Schippers JHM, Schmidt R, Wagstaff C, Jing HC (2015) Living to die and dying to live: the survival strategy behind leaf senescence. Plant Physiol 169:915–930
Stewart Lilley JL, Gan Y, Graham IA, Nemhauser JL (2013) The effects of DELLAs on growth change with developmental stage and brassinosteroid levels. Plant J 76:165–173
Sun S, Chen D, Li X, Qiao S, Shi C, Li C, Shen H, Wang X (2015) Brassinosteroid signaling regulates leaf erectness in Oryza sativa via the control of a specific u-type cyclin and cell proliferation. Dev Cell 34:220–228
Swamy KN, Rao SSR (2011) Effect of brassinosteroids on the performance of coleus (Coleus forskohlii). J Herbs Spices Med Plants 17:12–20
Van Zanten M, Millenaar FF, Cox MCH, Pierik R, Voesenek LACJ, Peeters AJM (2009) Auxin perception and polar auxin transport are not always a prerequisite for differential growth. Plant Signal Behav 4:899–901
Vandenbussche F, Straeten DVD (2004) Shaping the shoot: a circuitry that integrates multiple signals. Trends Plant Sci 9:500–505
Vardhini BV (2017) Modifications of morphological and anatomical characteristics of plants by application of brassinosteroids under various abiotic stress conditions—a review. Plant Gene 11:70–89
Yoshizawa E, Kaizuka M, Yamagami A, Takeuchi MH, Matsui M, Kakei Y, Shimada Y, Sakuta M, Osada H, Asami T, Nakano T (2014) BPG3 is a novel chloroplast protein that involves the greening of leaves and related to brassinosteroid signaling. Biosci Biotechnol Biochem 78:420–442
Zhiponova MK, Vanhoutte I, Boudolf V, Betti C, Dhondt S, Coppens F, Mille E, Maes S, González-García MP, Cano-Delgado AI, Inzé D, Beemster GTS, Veylder L, Russinova E (2013) Brassinosteroid production and signaling differentially control cell division and expansion in the leaf. New Phytol 197:490–502
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BIOBRAS16 was kindly provided by researchers from INCA (Instituto Nacional de Ciencias Agrarias, La Habana, Cuba).
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de Assis-Gomes, M.M., Pinheiro, D.T., Bressan-Smith, R. et al. Exogenous brassinosteroid application delays senescence and promotes hyponasty in Carica papaya L. leaves. Theor. Exp. Plant Physiol. 30, 193–201 (2018). https://doi.org/10.1007/s40626-018-0114-5
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DOI: https://doi.org/10.1007/s40626-018-0114-5